Finding the Fourth Proportional to 2,155.18, 3,235.20 and 1,571.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.18 : 3,235.20 = 1,571.08 : x
2. Step 2: Convert to fraction form
   2,155.18/3,235.20 = 1,571.08/x
3. Step 3: Cross multiply
   2,155.18x = 3,235.20 × 1,571.08
4. Step 4: Simplify right side
   2,155.18x = 5,082,758.02
5. Step 5: Solve for x
   x = 5,082,758.02/2,155.18
6. Step 6: Final answer
   x = 2,358.39