Finding the Fourth Proportional to 2,659,892.46, 3,990,399.12 and 862,635.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659,892.46 : 3,990,399.12 = 862,635.78 : x
2. Step 2: Convert to fraction form
   2,659,892.46/3,990,399.12 = 862,635.78/x
3. Step 3: Cross multiply
   2,659,892.46x = 3,990,399.12 × 862,635.78
4. Step 4: Simplify right side
   2,659,892.46x = 3,442,261,057,392.51
5. Step 5: Solve for x
   x = 3,442,261,057,392.51/2,659,892.46
6. Step 6: Final answer
   x = 1,294,135.42