Finding the Fourth Proportional to 2,641.82, 3,962.61 and 998.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.82 : 3,962.61 = 998.24 : x
2. Step 2: Convert to fraction form
   2,641.82/3,962.61 = 998.24/x
3. Step 3: Cross multiply
   2,641.82x = 3,962.61 × 998.24
4. Step 4: Simplify right side
   2,641.82x = 3,955,635.81
5. Step 5: Solve for x
   x = 3,955,635.81/2,641.82
6. Step 6: Final answer
   x = 1,497.31