We know that:
1 south African rand = 0.075 usd
1 kuwaiti dinar = 3.31 usd
1 japanese yen = 0.0089 usd
Therefore the total money in usd is:
total usd = 150 rand * (0.075 usd / 1 rand) + 350 dinar * (3.31 usd / 1 dinar) + 200 yen * (0.0089 usd / 1 yen)
total usd = 1,171.53 us dollars