Finding the Fourth Proportional to 1,116.92, 1,541.31 and 724.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.92 : 1,541.31 = 724.34 : x
2. Step 2: Convert to fraction form
   1,116.92/1,541.31 = 724.34/x
3. Step 3: Cross multiply
   1,116.92x = 1,541.31 × 724.34
4. Step 4: Simplify right side
   1,116.92x = 1,116,432.49
5. Step 5: Solve for x
   x = 1,116,432.49/1,116.92
6. Step 6: Final answer
   x = 999.56