Finding the Fourth Proportional to 2,056,686, 3,085,316.22 and 858,333.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056,686 : 3,085,316.22 = 858,333.96 : x
2. Step 2: Convert to fraction form
   2,056,686/3,085,316.22 = 858,333.96/x
3. Step 3: Cross multiply
   2,056,686x = 3,085,316.22 × 858,333.96
4. Step 4: Simplify right side
   2,056,686x = 2,648,231,688,964.83
5. Step 5: Solve for x
   x = 2,648,231,688,964.83/2,056,686
6. Step 6: Final answer
   x = 1,287,620.81