Finding the Fourth Proportional to 1,550.24, 2,139.32 and 887.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.24 : 2,139.32 = 887.06 : x
2. Step 2: Convert to fraction form
   1,550.24/2,139.32 = 887.06/x
3. Step 3: Cross multiply
   1,550.24x = 2,139.32 × 887.06
4. Step 4: Simplify right side
   1,550.24x = 1,897,705.20
5. Step 5: Solve for x
   x = 1,897,705.20/1,550.24
6. Step 6: Final answer
   x = 1,224.14