Finding the Fourth Proportional to 2,222.22, 3,066.72 and 1,278.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.22 : 3,066.72 = 1,278.03 : x
2. Step 2: Convert to fraction form
   2,222.22/3,066.72 = 1,278.03/x
3. Step 3: Cross multiply
   2,222.22x = 3,066.72 × 1,278.03
4. Step 4: Simplify right side
   2,222.22x = 3,919,360.16
5. Step 5: Solve for x
   x = 3,919,360.16/2,222.22
6. Step 6: Final answer
   x = 1,763.71