Finding the Fourth Proportional to 2,507.71, 3,761.89 and 863.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.71 : 3,761.89 = 863.81 : x
2. Step 2: Convert to fraction form
   2,507.71/3,761.89 = 863.81/x
3. Step 3: Cross multiply
   2,507.71x = 3,761.89 × 863.81
4. Step 4: Simplify right side
   2,507.71x = 3,249,577.36
5. Step 5: Solve for x
   x = 3,249,577.36/2,507.71
6. Step 6: Final answer
   x = 1,295.83