Finding the Fourth Proportional to 3,171.32, 4,757.56 and 1,321.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.32 : 4,757.56 = 1,321.52 : x
2. Step 2: Convert to fraction form
   3,171.32/4,757.56 = 1,321.52/x
3. Step 3: Cross multiply
   3,171.32x = 4,757.56 × 1,321.52
4. Step 4: Simplify right side
   3,171.32x = 6,287,210.69
5. Step 5: Solve for x
   x = 6,287,210.69/3,171.32
6. Step 6: Final answer
   x = 1,982.52