Need help for auto update a running balance in adotable

Hi experts, I feel empty and searching with google was too long without a result I understood.

Perhaps you can help me.

My Problem:

I habe an ADOTable with the Fields 'ID(unique)', 'Date', 'Title', 'Comment', 'Account' and 'amount'.
In a DB Grid I want to complete with one more column named 'balance'. It's no problem, to add this calculation for every row, but then I only get the sum of this row. I would like to get a cumulative result. And if I will later add an entry for an earlier date, all balance should be autoupdtaed like in Excel.

i.e.

beginning balance := 1000


Date                    |  Title  |...  amount ... |  balance

01.01.2014          |Test1  | .... 100,00  |  1100
05.01.2014          |Test2  | .... -50,00  |   1050
05.02.2014          |Test3  | .... -100,00  | 900
05.02.2014          |Test4  | .... -200,00  |  700
05.03.2014          |Test5  | .... -800,00  |  -100

and so on...

Have you some code to rescue me ?

Thanks, Tom