Finding the Fourth Proportional to 2,560,429.92, 3,839,800.59 and 854,103

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,429.92 : 3,839,800.59 = 854,103 : x
2. Step 2: Convert to fraction form
   2,560,429.92/3,839,800.59 = 854,103/x
3. Step 3: Cross multiply
   2,560,429.92x = 3,839,800.59 × 854,103
4. Step 4: Simplify right side
   2,560,429.92x = 3,279,585,203,320.77
5. Step 5: Solve for x
   x = 3,279,585,203,320.77/2,560,429.92
6. Step 6: Final answer
   x = 1,280,872.86