Finding the Fourth Proportional to 2,221.89, 3,066.26 and 1,227.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.89 : 3,066.26 = 1,227.28 : x
2. Step 2: Convert to fraction form
   2,221.89/3,066.26 = 1,227.28/x
3. Step 3: Cross multiply
   2,221.89x = 3,066.26 × 1,227.28
4. Step 4: Simplify right side
   2,221.89x = 3,763,145.77
5. Step 5: Solve for x
   x = 3,763,145.77/2,221.89
6. Step 6: Final answer
   x = 1,693.67