Finding the Fourth Proportional to 2,728.82, 3,765.55 and 1,550.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.82 : 3,765.55 = 1,550.07 : x
2. Step 2: Convert to fraction form
   2,728.82/3,765.55 = 1,550.07/x
3. Step 3: Cross multiply
   2,728.82x = 3,765.55 × 1,550.07
4. Step 4: Simplify right side
   2,728.82x = 5,836,852.80
5. Step 5: Solve for x
   x = 5,836,852.80/2,728.82
6. Step 6: Final answer
   x = 2,138.97