Finding the Fourth Proportional to 1,665.28, 2,498.33 and 495.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.28 : 2,498.33 = 495.24 : x
2. Step 2: Convert to fraction form
   1,665.28/2,498.33 = 495.24/x
3. Step 3: Cross multiply
   1,665.28x = 2,498.33 × 495.24
4. Step 4: Simplify right side
   1,665.28x = 1,237,264.82
5. Step 5: Solve for x
   x = 1,237,264.82/1,665.28
6. Step 6: Final answer
   x = 742.98