Finding the Fourth Proportional to 4,328.82, 6,487.56 and 1,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,328.82 : 6,487.56 = 1,728.72 : x
2. Step 2: Convert to fraction form
   4,328.82/6,487.56 = 1,728.72/x
3. Step 3: Cross multiply
   4,328.82x = 6,487.56 × 1,728.72
4. Step 4: Simplify right side
   4,328.82x = 11,215,174.72
5. Step 5: Solve for x
   x = 11,215,174.72/4,328.82
6. Step 6: Final answer
   x = 2,590.82