Finding the Fourth Proportional to 2,617.88, 3,923.22 and 972.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.88 : 3,923.22 = 972.82 : x
2. Step 2: Convert to fraction form
   2,617.88/3,923.22 = 972.82/x
3. Step 3: Cross multiply
   2,617.88x = 3,923.22 × 972.82
4. Step 4: Simplify right side
   2,617.88x = 3,816,586.88
5. Step 5: Solve for x
   x = 3,816,586.88/2,617.88
6. Step 6: Final answer
   x = 1,457.89