Finding the Fourth Proportional to 2,567.76, 3,543.72 and 1,520.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,567.76 : 3,543.72 = 1,520.16 : x
2. Step 2: Convert to fraction form
   2,567.76/3,543.72 = 1,520.16/x
3. Step 3: Cross multiply
   2,567.76x = 3,543.72 × 1,520.16
4. Step 4: Simplify right side
   2,567.76x = 5,387,021.40
5. Step 5: Solve for x
   x = 5,387,021.40/2,567.76
6. Step 6: Final answer
   x = 2,097.95