Finding the Fourth Proportional to 1,123.22, 1,550.50 and 808.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.22 : 1,550.50 = 808.54 : x
2. Step 2: Convert to fraction form
   1,123.22/1,550.50 = 808.54/x
3. Step 3: Cross multiply
   1,123.22x = 1,550.50 × 808.54
4. Step 4: Simplify right side
   1,123.22x = 1,253,635.37
5. Step 5: Solve for x
   x = 1,253,635.37/1,123.22
6. Step 6: Final answer
   x = 1,116.11