Finding the Fourth Proportional to 1,550.00, 2,139.01 and 886.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.00 : 2,139.01 = 886.88 : x
2. Step 2: Convert to fraction form
   1,550.00/2,139.01 = 886.88/x
3. Step 3: Cross multiply
   1,550.00x = 2,139.01 × 886.88
4. Step 4: Simplify right side
   1,550.00x = 1,897,032.28
5. Step 5: Solve for x
   x = 1,897,032.28/1,550.00
6. Step 6: Final answer
   x = 1,223.89