Finding the Fourth Proportional to 1,111.13, 1,667.86 and 495.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.13 : 1,667.86 = 495.26 : x
2. Step 2: Convert to fraction form
   1,111.13/1,667.86 = 495.26/x
3. Step 3: Cross multiply
   1,111.13x = 1,667.86 × 495.26
4. Step 4: Simplify right side
   1,111.13x = 826,024.34
5. Step 5: Solve for x
   x = 826,024.34/1,111.13
6. Step 6: Final answer
   x = 743.41