Finding the Fourth Proportional to 1,142.72, 1,714.07 and 655.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.72 : 1,714.07 = 655.42 : x
2. Step 2: Convert to fraction form
   1,142.72/1,714.07 = 655.42/x
3. Step 3: Cross multiply
   1,142.72x = 1,714.07 × 655.42
4. Step 4: Simplify right side
   1,142.72x = 1,123,435.76
5. Step 5: Solve for x
   x = 1,123,435.76/1,142.72
6. Step 6: Final answer
   x = 983.12