Finding the Fourth Proportional to 1,550.54, 2,139.62 and 887.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.54 : 2,139.62 = 887.24 : x
2. Step 2: Convert to fraction form
   1,550.54/2,139.62 = 887.24/x
3. Step 3: Cross multiply
   1,550.54x = 2,139.62 × 887.24
4. Step 4: Simplify right side
   1,550.54x = 1,898,341.31
5. Step 5: Solve for x
   x = 1,898,341.31/1,550.54
6. Step 6: Final answer
   x = 1,224.31