Finding the Fourth Proportional to 1,111.73, 1,668.06 and 495.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.73 : 1,668.06 = 495.02 : x
2. Step 2: Convert to fraction form
   1,111.73/1,668.06 = 495.02/x
3. Step 3: Cross multiply
   1,111.73x = 1,668.06 × 495.02
4. Step 4: Simplify right side
   1,111.73x = 825,723.06
5. Step 5: Solve for x
   x = 825,723.06/1,111.73
6. Step 6: Final answer
   x = 742.74