Finding the Fourth Proportional to 2,222.12, 3,066.90 and 1,291.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.12 : 3,066.90 = 1,291.16 : x
2. Step 2: Convert to fraction form
   2,222.12/3,066.90 = 1,291.16/x
3. Step 3: Cross multiply
   2,222.12x = 3,066.90 × 1,291.16
4. Step 4: Simplify right side
   2,222.12x = 3,959,858.60
5. Step 5: Solve for x
   x = 3,959,858.60/2,222.12
6. Step 6: Final answer
   x = 1,782.02