Finding the Fourth Proportional to 2,657,664.72, 3,987,078.46 and 860,729.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657,664.72 : 3,987,078.46 = 860,729.84 : x
2. Step 2: Convert to fraction form
   2,657,664.72/3,987,078.46 = 860,729.84/x
3. Step 3: Cross multiply
   2,657,664.72x = 3,987,078.46 × 860,729.84
4. Step 4: Simplify right side
   2,657,664.72x = 3,431,797,397,807.57
5. Step 5: Solve for x
   x = 3,431,797,397,807.57/2,657,664.72
6. Step 6: Final answer
   x = 1,291,283.05