Finding the Fourth Proportional to 1,550.04, 2,139.05 and 886.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.04 : 2,139.05 = 886.89 : x
2. Step 2: Convert to fraction form
   1,550.04/2,139.05 = 886.89/x
3. Step 3: Cross multiply
   1,550.04x = 2,139.05 × 886.89
4. Step 4: Simplify right side
   1,550.04x = 1,897,102.05
5. Step 5: Solve for x
   x = 1,897,102.05/1,550.04
6. Step 6: Final answer
   x = 1,223.91