Finding the Fourth Proportional to 2,853.27, 4,256.60 and 2,773.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,853.27 : 4,256.60 = 2,773.89 : x
2. Step 2: Convert to fraction form
   2,853.27/4,256.60 = 2,773.89/x
3. Step 3: Cross multiply
   2,853.27x = 4,256.60 × 2,773.89
4. Step 4: Simplify right side
   2,853.27x = 11,807,326.30
5. Step 5: Solve for x
   x = 11,807,326.30/2,853.27
6. Step 6: Final answer
   x = 4,138.17