Finding the Fourth Proportional to 2,198.52, 3,298.04 and 965.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.52 : 3,298.04 = 965.78 : x
2. Step 2: Convert to fraction form
   2,198.52/3,298.04 = 965.78/x
3. Step 3: Cross multiply
   2,198.52x = 3,298.04 × 965.78
4. Step 4: Simplify right side
   2,198.52x = 3,185,175.74
5. Step 5: Solve for x
   x = 3,185,175.74/2,198.52
6. Step 6: Final answer
   x = 1,448.78