Finding the Fourth Proportional to 2,568.40, 3,545.16 and 1,574.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.40 : 3,545.16 = 1,574.32 : x
2. Step 2: Convert to fraction form
   2,568.40/3,545.16 = 1,574.32/x
3. Step 3: Cross multiply
   2,568.40x = 3,545.16 × 1,574.32
4. Step 4: Simplify right side
   2,568.40x = 5,581,216.29
5. Step 5: Solve for x
   x = 5,581,216.29/2,568.40
6. Step 6: Final answer
   x = 2,173.03