Finding the Fourth Proportional to 2,221.73, 3,066.22 and 1,277.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.73 : 3,066.22 = 1,277.56 : x
2. Step 2: Convert to fraction form
   2,221.73/3,066.22 = 1,277.56/x
3. Step 3: Cross multiply
   2,221.73x = 3,066.22 × 1,277.56
4. Step 4: Simplify right side
   2,221.73x = 3,917,280.02
5. Step 5: Solve for x
   x = 3,917,280.02/2,221.73
6. Step 6: Final answer
   x = 1,763.17