Finding the Fourth Proportional to 2,568.48, 3,543.84 and 1,520.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.48 : 3,543.84 = 1,520.64 : x
2. Step 2: Convert to fraction form
   2,568.48/3,543.84 = 1,520.64/x
3. Step 3: Cross multiply
   2,568.48x = 3,543.84 × 1,520.64
4. Step 4: Simplify right side
   2,568.48x = 5,388,904.86
5. Step 5: Solve for x
   x = 5,388,904.86/2,568.48
6. Step 6: Final answer
   x = 2,098.09