Finding the Fourth Proportional to 3,986,111.70, 5,979,167.55 and 1,856,411.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986,111.70 : 5,979,167.55 = 1,856,411.10 : x
2. Step 2: Convert to fraction form
   3,986,111.70/5,979,167.55 = 1,856,411.10/x
3. Step 3: Cross multiply
   3,986,111.70x = 5,979,167.55 × 1,856,411.10
4. Step 4: Simplify right side
   3,986,111.70x = 11,099,793,008,579.80
5. Step 5: Solve for x
   x = 11,099,793,008,579.80/3,986,111.70
6. Step 6: Final answer
   x = 2,784,616.65