Finding the Fourth Proportional to 2,641.05, 3,962.63 and 998.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.05 : 3,962.63 = 998.07 : x
2. Step 2: Convert to fraction form
   2,641.05/3,962.63 = 998.07/x
3. Step 3: Cross multiply
   2,641.05x = 3,962.63 × 998.07
4. Step 4: Simplify right side
   2,641.05x = 3,954,982.12
5. Step 5: Solve for x
   x = 3,954,982.12/2,641.05
6. Step 6: Final answer
   x = 1,497.50