Finding the Fourth Proportional to 1,132.55, 1,562.90 and 635.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.55 : 1,562.90 = 635.31 : x
2. Step 2: Convert to fraction form
   1,132.55/1,562.90 = 635.31/x
3. Step 3: Cross multiply
   1,132.55x = 1,562.90 × 635.31
4. Step 4: Simplify right side
   1,132.55x = 992,922.82
5. Step 5: Solve for x
   x = 992,922.82/1,132.55
6. Step 6: Final answer
   x = 876.72