Finding the Fourth Proportional to 1,550.18, 2,139.03 and 887.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.18 : 2,139.03 = 887.07 : x
2. Step 2: Convert to fraction form
   1,550.18/2,139.03 = 887.07/x
3. Step 3: Cross multiply
   1,550.18x = 2,139.03 × 887.07
4. Step 4: Simplify right side
   1,550.18x = 1,897,469.34
5. Step 5: Solve for x
   x = 1,897,469.34/1,550.18
6. Step 6: Final answer
   x = 1,224.04