Finding the Fourth Proportional to 2,168.88, 3,250.54 and 998.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.88 : 3,250.54 = 998.61 : x
2. Step 2: Convert to fraction form
   2,168.88/3,250.54 = 998.61/x
3. Step 3: Cross multiply
   2,168.88x = 3,250.54 × 998.61
4. Step 4: Simplify right side
   2,168.88x = 3,246,021.75
5. Step 5: Solve for x
   x = 3,246,021.75/2,168.88
6. Step 6: Final answer
   x = 1,496.64