Finding the Fourth Proportional to 2,200.94, 3,301.78 and 814.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.94 : 3,301.78 = 814.28 : x
2. Step 2: Convert to fraction form
   2,200.94/3,301.78 = 814.28/x
3. Step 3: Cross multiply
   2,200.94x = 3,301.78 × 814.28
4. Step 4: Simplify right side
   2,200.94x = 2,688,573.42
5. Step 5: Solve for x
   x = 2,688,573.42/2,200.94
6. Step 6: Final answer
   x = 1,221.56