Finding the Fourth Proportional to 1,123.16, 1,548.96 and 808.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.16 : 1,548.96 = 808.28 : x
2. Step 2: Convert to fraction form
   1,123.16/1,548.96 = 808.28/x
3. Step 3: Cross multiply
   1,123.16x = 1,548.96 × 808.28
4. Step 4: Simplify right side
   1,123.16x = 1,251,993.39
5. Step 5: Solve for x
   x = 1,251,993.39/1,123.16
6. Step 6: Final answer
   x = 1,114.71