Finding the Fourth Proportional to 1,111.99, 1,666.54 and 495.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.99 : 1,666.54 = 495.67 : x
2. Step 2: Convert to fraction form
   1,111.99/1,666.54 = 495.67/x
3. Step 3: Cross multiply
   1,111.99x = 1,666.54 × 495.67
4. Step 4: Simplify right side
   1,111.99x = 826,048.48
5. Step 5: Solve for x
   x = 826,048.48/1,111.99
6. Step 6: Final answer
   x = 742.86