Finding the Fourth Proportional to 2,728.57, 3,765.15 and 1,549.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.57 : 3,765.15 = 1,549.42 : x
2. Step 2: Convert to fraction form
   2,728.57/3,765.15 = 1,549.42/x
3. Step 3: Cross multiply
   2,728.57x = 3,765.15 × 1,549.42
4. Step 4: Simplify right side
   2,728.57x = 5,833,798.71
5. Step 5: Solve for x
   x = 5,833,798.71/2,728.57
6. Step 6: Final answer
   x = 2,138.04