Finding the Fourth Proportional to 2,057,891.40, 3,087,165.15 and 859,196.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057,891.40 : 3,087,165.15 = 859,196.70 : x
2. Step 2: Convert to fraction form
   2,057,891.40/3,087,165.15 = 859,196.70/x
3. Step 3: Cross multiply
   2,057,891.40x = 3,087,165.15 × 859,196.70
4. Step 4: Simplify right side
   2,057,891.40x = 2,652,482,109,235.01
5. Step 5: Solve for x
   x = 2,652,482,109,235.01/2,057,891.40
6. Step 6: Final answer
   x = 1,288,932.02