Finding the Fourth Proportional to 1,097.15, 1,513.98 and 724.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.15 : 1,513.98 = 724.86 : x
2. Step 2: Convert to fraction form
   1,097.15/1,513.98 = 724.86/x
3. Step 3: Cross multiply
   1,097.15x = 1,513.98 × 724.86
4. Step 4: Simplify right side
   1,097.15x = 1,097,423.54
5. Step 5: Solve for x
   x = 1,097,423.54/1,097.15
6. Step 6: Final answer
   x = 1,000.25