Finding the Fourth Proportional to 1,317.33, 1,976.27 and 495.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.33 : 1,976.27 = 495.86 : x
2. Step 2: Convert to fraction form
   1,317.33/1,976.27 = 495.86/x
3. Step 3: Cross multiply
   1,317.33x = 1,976.27 × 495.86
4. Step 4: Simplify right side
   1,317.33x = 979,940.88
5. Step 5: Solve for x
   x = 979,940.88/1,317.33
6. Step 6: Final answer
   x = 743.88