Finding the Fourth Proportional to 1,550.52, 2,139.75 and 887.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.52 : 2,139.75 = 887.34 : x
2. Step 2: Convert to fraction form
   1,550.52/2,139.75 = 887.34/x
3. Step 3: Cross multiply
   1,550.52x = 2,139.75 × 887.34
4. Step 4: Simplify right side
   1,550.52x = 1,898,685.77
5. Step 5: Solve for x
   x = 1,898,685.77/1,550.52
6. Step 6: Final answer
   x = 1,224.55