Finding the Fourth Proportional to 2,877.86, 3,969.89 and 2,377.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.86 : 3,969.89 = 2,377.54 : x
2. Step 2: Convert to fraction form
   2,877.86/3,969.89 = 2,377.54/x
3. Step 3: Cross multiply
   2,877.86x = 3,969.89 × 2,377.54
4. Step 4: Simplify right side
   2,877.86x = 9,438,572.27
5. Step 5: Solve for x
   x = 9,438,572.27/2,877.86
6. Step 6: Final answer
   x = 3,279.72