Finding the Fourth Proportional to 2,728.56, 3,765.86 and 1,550.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.56 : 3,765.86 = 1,550.35 : x
2. Step 2: Convert to fraction form
   2,728.56/3,765.86 = 1,550.35/x
3. Step 3: Cross multiply
   2,728.56x = 3,765.86 × 1,550.35
4. Step 4: Simplify right side
   2,728.56x = 5,838,401.05
5. Step 5: Solve for x
   x = 5,838,401.05/2,728.56
6. Step 6: Final answer
   x = 2,139.74