Finding the Fourth Proportional to 2,198.72, 3,297.60 and 1,028

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.72 : 3,297.60 = 1,028 : x
2. Step 2: Convert to fraction form
   2,198.72/3,297.60 = 1,028/x
3. Step 3: Cross multiply
   2,198.72x = 3,297.60 × 1,028
4. Step 4: Simplify right side
   2,198.72x = 3,389,932.80
5. Step 5: Solve for x
   x = 3,389,932.80/2,198.72
6. Step 6: Final answer
   x = 1,541.78