Finding the Fourth Proportional to 2,507.31, 3,761.18 and 863.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.31 : 3,761.18 = 863.86 : x
2. Step 2: Convert to fraction form
   2,507.31/3,761.18 = 863.86/x
3. Step 3: Cross multiply
   2,507.31x = 3,761.18 × 863.86
4. Step 4: Simplify right side
   2,507.31x = 3,249,132.95
5. Step 5: Solve for x
   x = 3,249,132.95/2,507.31
6. Step 6: Final answer
   x = 1,295.86