Finding the Fourth Proportional to 2,659,864.71, 3,990,357.49 and 862,608.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659,864.71 : 3,990,357.49 = 862,608.05 : x
2. Step 2: Convert to fraction form
   2,659,864.71/3,990,357.49 = 862,608.05/x
3. Step 3: Cross multiply
   2,659,864.71x = 3,990,357.49 × 862,608.05
4. Step 4: Simplify right side
   2,659,864.71x = 3,442,114,493,251.80
5. Step 5: Solve for x
   x = 3,442,114,493,251.80/2,659,864.71
6. Step 6: Final answer
   x = 1,294,093.82