Finding the Fourth Proportional to 2,641.24, 3,962.92 and 998.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.24 : 3,962.92 = 998.25 : x
2. Step 2: Convert to fraction form
   2,641.24/3,962.92 = 998.25/x
3. Step 3: Cross multiply
   2,641.24x = 3,962.92 × 998.25
4. Step 4: Simplify right side
   2,641.24x = 3,955,984.89
5. Step 5: Solve for x
   x = 3,955,984.89/2,641.24
6. Step 6: Final answer
   x = 1,497.78