Finding the Fourth Proportional to 2,266.42, 3,397.89 and 879.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.42 : 3,397.89 = 879.55 : x
2. Step 2: Convert to fraction form
   2,266.42/3,397.89 = 879.55/x
3. Step 3: Cross multiply
   2,266.42x = 3,397.89 × 879.55
4. Step 4: Simplify right side
   2,266.42x = 2,988,614.15
5. Step 5: Solve for x
   x = 2,988,614.15/2,266.42
6. Step 6: Final answer
   x = 1,318.65