Adams Bowie is trying to determine the amount to set aside so that he will have enough money on hand in 5 years to overhaul the engine on his vintage used car. While there is some uncertainty about the cost of engine overhauls in 5 years, by conducting some research online, Adams has developed the following estimates.

Engine Overhaul Estimated Cash Flow	Probability Assessment
$280	10%
640	30%
760	50%
790	10%

How much should Adam Bowie deposit today in an account earning 9%, compounded annually, so that he will have enough money on hand in 5 years to pay for the overhaul?