Finding the Fourth Proportional to 1,550.22, 2,139.39 and 886.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.22 : 2,139.39 = 886.92 : x
2. Step 2: Convert to fraction form
   1,550.22/2,139.39 = 886.92/x
3. Step 3: Cross multiply
   1,550.22x = 2,139.39 × 886.92
4. Step 4: Simplify right side
   1,550.22x = 1,897,467.78
5. Step 5: Solve for x
   x = 1,897,467.78/1,550.22
6. Step 6: Final answer
   x = 1,224.00