Finding the Fourth Proportional to 2,198.63, 3,297.31 and 717.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.63 : 3,297.31 = 717.89 : x
2. Step 2: Convert to fraction form
   2,198.63/3,297.31 = 717.89/x
3. Step 3: Cross multiply
   2,198.63x = 3,297.31 × 717.89
4. Step 4: Simplify right side
   2,198.63x = 2,367,087.59
5. Step 5: Solve for x
   x = 2,367,087.59/2,198.63
6. Step 6: Final answer
   x = 1,076.62