Finding the Fourth Proportional to 1,131.29, 1,560.83 and 633.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.29 : 1,560.83 = 633.86 : x
2. Step 2: Convert to fraction form
   1,131.29/1,560.83 = 633.86/x
3. Step 3: Cross multiply
   1,131.29x = 1,560.83 × 633.86
4. Step 4: Simplify right side
   1,131.29x = 989,336.73
5. Step 5: Solve for x
   x = 989,336.73/1,131.29
6. Step 6: Final answer
   x = 874.52