Finding the Fourth Proportional to 2,208.52, 3,306.92 and 1,728.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.52 : 3,306.92 = 1,728.82 : x
2. Step 2: Convert to fraction form
   2,208.52/3,306.92 = 1,728.82/x
3. Step 3: Cross multiply
   2,208.52x = 3,306.92 × 1,728.82
4. Step 4: Simplify right side
   2,208.52x = 5,717,069.43
5. Step 5: Solve for x
   x = 5,717,069.43/2,208.52
6. Step 6: Final answer
   x = 2,588.64