Finding the Fourth Proportional to 1,550.05, 2,138.46 and 886.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.05 : 2,138.46 = 886.55 : x
2. Step 2: Convert to fraction form
   1,550.05/2,138.46 = 886.55/x
3. Step 3: Cross multiply
   1,550.05x = 2,138.46 × 886.55
4. Step 4: Simplify right side
   1,550.05x = 1,895,836.59
5. Step 5: Solve for x
   x = 1,895,836.59/1,550.05
6. Step 6: Final answer
   x = 1,223.08