Finding the Fourth Proportional to 2,728.69, 3,765.71 and 1,549.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.69 : 3,765.71 = 1,549.87 : x
2. Step 2: Convert to fraction form
   2,728.69/3,765.71 = 1,549.87/x
3. Step 3: Cross multiply
   2,728.69x = 3,765.71 × 1,549.87
4. Step 4: Simplify right side
   2,728.69x = 5,836,360.96
5. Step 5: Solve for x
   x = 5,836,360.96/2,728.69
6. Step 6: Final answer
   x = 2,138.89