Finding the Fourth Proportional to 2,221.81, 3,066.04 and 1,227.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.81 : 3,066.04 = 1,227.07 : x
2. Step 2: Convert to fraction form
   2,221.81/3,066.04 = 1,227.07/x
3. Step 3: Cross multiply
   2,221.81x = 3,066.04 × 1,227.07
4. Step 4: Simplify right side
   2,221.81x = 3,762,226.92
5. Step 5: Solve for x
   x = 3,762,226.92/2,221.81
6. Step 6: Final answer
   x = 1,693.32