Finding the Fourth Proportional to 2,658,848.43, 3,987,436.06 and 861,314.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658,848.43 : 3,987,436.06 = 861,314.86 : x
2. Step 2: Convert to fraction form
   2,658,848.43/3,987,436.06 = 861,314.86/x
3. Step 3: Cross multiply
   2,658,848.43x = 3,987,436.06 × 861,314.86
4. Step 4: Simplify right side
   2,658,848.43x = 3,434,437,910,564.57
5. Step 5: Solve for x
   x = 3,434,437,910,564.57/2,658,848.43
6. Step 6: Final answer
   x = 1,291,701.28