Finding the Fourth Proportional to 2,198.34, 3,298.83 and 1,223.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.34 : 3,298.83 = 1,223.46 : x
2. Step 2: Convert to fraction form
   2,198.34/3,298.83 = 1,223.46/x
3. Step 3: Cross multiply
   2,198.34x = 3,298.83 × 1,223.46
4. Step 4: Simplify right side
   2,198.34x = 4,035,986.55
5. Step 5: Solve for x
   x = 4,035,986.55/2,198.34
6. Step 6: Final answer
   x = 1,835.92