Finding the Fourth Proportional to 2,594.39, 3,891.85 and 863.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,594.39 : 3,891.85 = 863.15 : x
2. Step 2: Convert to fraction form
   2,594.39/3,891.85 = 863.15/x
3. Step 3: Cross multiply
   2,594.39x = 3,891.85 × 863.15
4. Step 4: Simplify right side
   2,594.39x = 3,359,228.71
5. Step 5: Solve for x
   x = 3,359,228.71/2,594.39
6. Step 6: Final answer
   x = 1,294.81