Finding the Fourth Proportional to 2,657,152.79, 3,986,361.89 and 860,036.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657,152.79 : 3,986,361.89 = 860,036.57 : x
2. Step 2: Convert to fraction form
   2,657,152.79/3,986,361.89 = 860,036.57/x
3. Step 3: Cross multiply
   2,657,152.79x = 3,986,361.89 × 860,036.57
4. Step 4: Simplify right side
   2,657,152.79x = 3,428,417,006,654.32
5. Step 5: Solve for x
   x = 3,428,417,006,654.32/2,657,152.79
6. Step 6: Final answer
   x = 1,290,259.64