Finding the Fourth Proportional to 2,712.56, 4,068.50 and 863.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.56 : 4,068.50 = 863.69 : x
2. Step 2: Convert to fraction form
   2,712.56/4,068.50 = 863.69/x
3. Step 3: Cross multiply
   2,712.56x = 4,068.50 × 863.69
4. Step 4: Simplify right side
   2,712.56x = 3,513,898.10
5. Step 5: Solve for x
   x = 3,513,898.10/2,712.56
6. Step 6: Final answer
   x = 1,295.42