Finding the Fourth Proportional to 1,586,568.39, 2,189,451.83 and 861,401.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,586,568.39 : 2,189,451.83 = 861,401.42 : x
2. Step 2: Convert to fraction form
   1,586,568.39/2,189,451.83 = 861,401.42/x
3. Step 3: Cross multiply
   1,586,568.39x = 2,189,451.83 × 861,401.42
4. Step 4: Simplify right side
   1,586,568.39x = 1,885,996,915,383.60
5. Step 5: Solve for x
   x = 1,885,996,915,383.60/1,586,568.39
6. Step 6: Final answer
   x = 1,188,727.15