Finding the Fourth Proportional to 2,564,146.45, 3,846,423.34 and 858,298.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564,146.45 : 3,846,423.34 = 858,298.75 : x
2. Step 2: Convert to fraction form
   2,564,146.45/3,846,423.34 = 858,298.75/x
3. Step 3: Cross multiply
   2,564,146.45x = 3,846,423.34 × 858,298.75
4. Step 4: Simplify right side
   2,564,146.45x = 3,301,380,344,692.83
5. Step 5: Solve for x
   x = 3,301,380,344,692.83/2,564,146.45
6. Step 6: Final answer
   x = 1,287,516.30