take a calculator and type in "5651/4403" and you'll get 1.28... so you can try different numbers of wins/losses (probably 5652/4403, 5653/4403, etc... assuming you plan to win the next few, and not lose any). do that, until the answer comes out to 1.29.
now, if the win/loss ratio rounds off, then you'll need 5658 wins and still only 4403 losses to get to 1.29. if the ratio "truncates", then you'd need 5680 wins. but odds are, you'll lose another game before you get that far, so you can use the above explanation to figure out how many more you need.
--jason
