Finding the Fourth Proportional to 1,131.83, 1,561.86 and 634.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.83 : 1,561.86 = 634.52 : x
2. Step 2: Convert to fraction form
   1,131.83/1,561.86 = 634.52/x
3. Step 3: Cross multiply
   1,131.83x = 1,561.86 × 634.52
4. Step 4: Simplify right side
   1,131.83x = 991,023.60
5. Step 5: Solve for x
   x = 991,023.60/1,131.83
6. Step 6: Final answer
   x = 875.60