Finding the Fourth Proportional to 1,131.95, 1,562.17 and 634.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.95 : 1,562.17 = 634.62 : x
2. Step 2: Convert to fraction form
   1,131.95/1,562.17 = 634.62/x
3. Step 3: Cross multiply
   1,131.95x = 1,562.17 × 634.62
4. Step 4: Simplify right side
   1,131.95x = 991,381.15
5. Step 5: Solve for x
   x = 991,381.15/1,131.95
6. Step 6: Final answer
   x = 875.82