Finding the Fourth Proportional to 1,550.16, 2,139.42 and 887.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.16 : 2,139.42 = 887.04 : x
2. Step 2: Convert to fraction form
   1,550.16/2,139.42 = 887.04/x
3. Step 3: Cross multiply
   1,550.16x = 2,139.42 × 887.04
4. Step 4: Simplify right side
   1,550.16x = 1,897,751.12
5. Step 5: Solve for x
   x = 1,897,751.12/1,550.16
6. Step 6: Final answer
   x = 1,224.23