Finding the Fourth Proportional to 2,617.32, 3,923.52 and 972.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.32 : 3,923.52 = 972.76 : x
2. Step 2: Convert to fraction form
   2,617.32/3,923.52 = 972.76/x
3. Step 3: Cross multiply
   2,617.32x = 3,923.52 × 972.76
4. Step 4: Simplify right side
   2,617.32x = 3,816,643.32
5. Step 5: Solve for x
   x = 3,816,643.32/2,617.32
6. Step 6: Final answer
   x = 1,458.23