Finding the Fourth Proportional to 3,144.54, 4,339.49 and 1,728.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.54 : 4,339.49 = 1,728.25 : x
2. Step 2: Convert to fraction form
   3,144.54/4,339.49 = 1,728.25/x
3. Step 3: Cross multiply
   3,144.54x = 4,339.49 × 1,728.25
4. Step 4: Simplify right side
   3,144.54x = 7,499,723.59
5. Step 5: Solve for x
   x = 7,499,723.59/3,144.54
6. Step 6: Final answer
   x = 2,385.00