Finding the Fourth Proportional to 2,777,793.30, 4,167,089.18 and 858,854.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,777,793.30 : 4,167,089.18 = 858,854.10 : x
2. Step 2: Convert to fraction form
   2,777,793.30/4,167,089.18 = 858,854.10/x
3. Step 3: Cross multiply
   2,777,793.30x = 4,167,089.18 × 858,854.10
4. Step 4: Simplify right side
   2,777,793.30x = 3,578,921,627,308.64
5. Step 5: Solve for x
   x = 3,578,921,627,308.64/2,777,793.30
6. Step 6: Final answer
   x = 1,288,404.59