Finding the Fourth Proportional to 1,111.06, 1,667.10 and 495.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.06 : 1,667.10 = 495.17 : x
2. Step 2: Convert to fraction form
   1,111.06/1,667.10 = 495.17/x
3. Step 3: Cross multiply
   1,111.06x = 1,667.10 × 495.17
4. Step 4: Simplify right side
   1,111.06x = 825,497.91
5. Step 5: Solve for x
   x = 825,497.91/1,111.06
6. Step 6: Final answer
   x = 742.98