Finding the Fourth Proportional to 2,222.28, 3,066.58 and 1,227.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.28 : 3,066.58 = 1,227.40 : x
2. Step 2: Convert to fraction form
   2,222.28/3,066.58 = 1,227.40/x
3. Step 3: Cross multiply
   2,222.28x = 3,066.58 × 1,227.40
4. Step 4: Simplify right side
   2,222.28x = 3,763,920.29
5. Step 5: Solve for x
   x = 3,763,920.29/2,222.28
6. Step 6: Final answer
   x = 1,693.72