Finding the Fourth Proportional to 2,854.27, 4,258.09 and 2,774.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,854.27 : 4,258.09 = 2,774.89 : x
2. Step 2: Convert to fraction form
   2,854.27/4,258.09 = 2,774.89/x
3. Step 3: Cross multiply
   2,854.27x = 4,258.09 × 2,774.89
4. Step 4: Simplify right side
   2,854.27x = 11,815,731.36
5. Step 5: Solve for x
   x = 11,815,731.36/2,854.27
6. Step 6: Final answer
   x = 4,139.67