Finding the Fourth Proportional to 2,568.66, 3,854.34 and 1,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.66 : 3,854.34 = 1,399.50 : x
2. Step 2: Convert to fraction form
   2,568.66/3,854.34 = 1,399.50/x
3. Step 3: Cross multiply
   2,568.66x = 3,854.34 × 1,399.50
4. Step 4: Simplify right side
   2,568.66x = 5,394,148.83
5. Step 5: Solve for x
   x = 5,394,148.83/2,568.66
6. Step 6: Final answer
   x = 2,099.99