Finding the Fourth Proportional to 1,131.03, 1,560.37 and 658.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.03 : 1,560.37 = 658.86 : x
2. Step 2: Convert to fraction form
   1,131.03/1,560.37 = 658.86/x
3. Step 3: Cross multiply
   1,131.03x = 1,560.37 × 658.86
4. Step 4: Simplify right side
   1,131.03x = 1,028,057.58
5. Step 5: Solve for x
   x = 1,028,057.58/1,131.03
6. Step 6: Final answer
   x = 908.96