Finding the Fourth Proportional to 2,660,166.72, 3,990,810.52 and 862,909.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,166.72 : 3,990,810.52 = 862,909.88 : x
2. Step 2: Convert to fraction form
   2,660,166.72/3,990,810.52 = 862,909.88/x
3. Step 3: Cross multiply
   2,660,166.72x = 3,990,810.52 × 862,909.88
4. Step 4: Simplify right side
   2,660,166.72x = 3,443,709,826,915.94
5. Step 5: Solve for x
   x = 3,443,709,826,915.94/2,660,166.72
6. Step 6: Final answer
   x = 1,294,546.62