Finding the Fourth Proportional to 2,619.52, 3,614.88 and 1,571.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.52 : 3,614.88 = 1,571.20 : x
2. Step 2: Convert to fraction form
   2,619.52/3,614.88 = 1,571.20/x
3. Step 3: Cross multiply
   2,619.52x = 3,614.88 × 1,571.20
4. Step 4: Simplify right side
   2,619.52x = 5,679,699.46
5. Step 5: Solve for x
   x = 5,679,699.46/2,619.52
6. Step 6: Final answer
   x = 2,168.22