Finding the Fourth Proportional to 1,550.50, 2,139.96 and 887.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.50 : 2,139.96 = 887.38 : x
2. Step 2: Convert to fraction form
   1,550.50/2,139.96 = 887.38/x
3. Step 3: Cross multiply
   1,550.50x = 2,139.96 × 887.38
4. Step 4: Simplify right side
   1,550.50x = 1,898,957.70
5. Step 5: Solve for x
   x = 1,898,957.70/1,550.50
6. Step 6: Final answer
   x = 1,224.74