Finding the Fourth Proportional to 2,571.72, 3,549 and 1,509.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.72 : 3,549 = 1,509.28 : x
2. Step 2: Convert to fraction form
   2,571.72/3,549 = 1,509.28/x
3. Step 3: Cross multiply
   2,571.72x = 3,549 × 1,509.28
4. Step 4: Simplify right side
   2,571.72x = 5,356,434.72
5. Step 5: Solve for x
   x = 5,356,434.72/2,571.72
6. Step 6: Final answer
   x = 2,082.82