Finding the Fourth Proportional to 2,202.16, 3,300.24 and 814.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,202.16 : 3,300.24 = 814.15 : x
2. Step 2: Convert to fraction form
   2,202.16/3,300.24 = 814.15/x
3. Step 3: Cross multiply
   2,202.16x = 3,300.24 × 814.15
4. Step 4: Simplify right side
   2,202.16x = 2,686,890.40
5. Step 5: Solve for x
   x = 2,686,890.40/2,202.16
6. Step 6: Final answer
   x = 1,220.12