Finding the Fourth Proportional to 2,221.86, 3,066.24 and 1,227.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.86 : 3,066.24 = 1,227.11 : x
2. Step 2: Convert to fraction form
   2,221.86/3,066.24 = 1,227.11/x
3. Step 3: Cross multiply
   2,221.86x = 3,066.24 × 1,227.11
4. Step 4: Simplify right side
   2,221.86x = 3,762,622.87
5. Step 5: Solve for x
   x = 3,762,622.87/2,221.86
6. Step 6: Final answer
   x = 1,693.46