Finding the Fourth Proportional to 2,507.52, 3,457.17 and 1,720.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.52 : 3,457.17 = 1,720.20 : x
2. Step 2: Convert to fraction form
   2,507.52/3,457.17 = 1,720.20/x
3. Step 3: Cross multiply
   2,507.52x = 3,457.17 × 1,720.20
4. Step 4: Simplify right side
   2,507.52x = 5,947,023.83
5. Step 5: Solve for x
   x = 5,947,023.83/2,507.52
6. Step 6: Final answer
   x = 2,371.68