Finding the Fourth Proportional to 1,111.38, 1,667.49 and 495.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.38 : 1,667.49 = 495.54 : x
2. Step 2: Convert to fraction form
   1,111.38/1,667.49 = 495.54/x
3. Step 3: Cross multiply
   1,111.38x = 1,667.49 × 495.54
4. Step 4: Simplify right side
   1,111.38x = 826,307.99
5. Step 5: Solve for x
   x = 826,307.99/1,111.38
6. Step 6: Final answer
   x = 743.50