Finding the Fourth Proportional to 3,200.72, 4,798.42 and 1,353.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.72 : 4,798.42 = 1,353.28 : x
2. Step 2: Convert to fraction form
   3,200.72/4,798.42 = 1,353.28/x
3. Step 3: Cross multiply
   3,200.72x = 4,798.42 × 1,353.28
4. Step 4: Simplify right side
   3,200.72x = 6,493,605.82
5. Step 5: Solve for x
   x = 6,493,605.82/3,200.72
6. Step 6: Final answer
   x = 2,028.80