Finding the Fourth Proportional to 2,423.87, 3,636.15 and 863.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.87 : 3,636.15 = 863.42 : x
2. Step 2: Convert to fraction form
   2,423.87/3,636.15 = 863.42/x
3. Step 3: Cross multiply
   2,423.87x = 3,636.15 × 863.42
4. Step 4: Simplify right side
   2,423.87x = 3,139,515.87
5. Step 5: Solve for x
   x = 3,139,515.87/2,423.87
6. Step 6: Final answer
   x = 1,295.25