Finding the Fourth Proportional to 1,097.22, 1,513.71 and 724.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.22 : 1,513.71 = 724.62 : x
2. Step 2: Convert to fraction form
   1,097.22/1,513.71 = 724.62/x
3. Step 3: Cross multiply
   1,097.22x = 1,513.71 × 724.62
4. Step 4: Simplify right side
   1,097.22x = 1,096,864.54
5. Step 5: Solve for x
   x = 1,096,864.54/1,097.22
6. Step 6: Final answer
   x = 999.68