Finding the Fourth Proportional to 2,660,057.94, 3,990,648.11 and 862,801.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,057.94 : 3,990,648.11 = 862,801.86 : x
2. Step 2: Convert to fraction form
   2,660,057.94/3,990,648.11 = 862,801.86/x
3. Step 3: Cross multiply
   2,660,057.94x = 3,990,648.11 × 862,801.86
4. Step 4: Simplify right side
   2,660,057.94x = 3,443,138,607,599.48
5. Step 5: Solve for x
   x = 3,443,138,607,599.48/2,660,057.94
6. Step 6: Final answer
   x = 1,294,384.82