Finding the Fourth Proportional to 1,571.75, 2,168.39 and 1,099.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.75 : 2,168.39 = 1,099.52 : x
2. Step 2: Convert to fraction form
   1,571.75/2,168.39 = 1,099.52/x
3. Step 3: Cross multiply
   1,571.75x = 2,168.39 × 1,099.52
4. Step 4: Simplify right side
   1,571.75x = 2,384,188.17
5. Step 5: Solve for x
   x = 2,384,188.17/1,571.75
6. Step 6: Final answer
   x = 1,516.90