Finding the Fourth Proportional to 2,056,663.69, 3,085,282.83 and 858,311.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056,663.69 : 3,085,282.83 = 858,311.62 : x
2. Step 2: Convert to fraction form
   2,056,663.69/3,085,282.83 = 858,311.62/x
3. Step 3: Cross multiply
   2,056,663.69x = 3,085,282.83 × 858,311.62
4. Step 4: Simplify right side
   2,056,663.69x = 2,648,134,103,975.49
5. Step 5: Solve for x
   x = 2,648,134,103,975.49/2,056,663.69
6. Step 6: Final answer
   x = 1,287,587.33