Finding the Fourth Proportional to 2,641.50, 3,962.31 and 998.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.50 : 3,962.31 = 998.82 : x
2. Step 2: Convert to fraction form
   2,641.50/3,962.31 = 998.82/x
3. Step 3: Cross multiply
   2,641.50x = 3,962.31 × 998.82
4. Step 4: Simplify right side
   2,641.50x = 3,957,630.73
5. Step 5: Solve for x
   x = 3,957,630.73/2,641.50
6. Step 6: Final answer
   x = 1,498.25