Finding the Fourth Proportional to 2,728, 3,765.30 and 1,549.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728 : 3,765.30 = 1,549.72 : x
2. Step 2: Convert to fraction form
   2,728/3,765.30 = 1,549.72/x
3. Step 3: Cross multiply
   2,728x = 3,765.30 × 1,549.72
4. Step 4: Simplify right side
   2,728x = 5,835,160.72
5. Step 5: Solve for x
   x = 5,835,160.72/2,728
6. Step 6: Final answer
   x = 2,138.99