Finding the Fourth Proportional to 2,877.85, 3,961.84 and 2,745.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.85 : 3,961.84 = 2,745.61 : x
2. Step 2: Convert to fraction form
   2,877.85/3,961.84 = 2,745.61/x
3. Step 3: Cross multiply
   2,877.85x = 3,961.84 × 2,745.61
4. Step 4: Simplify right side
   2,877.85x = 10,877,667.52
5. Step 5: Solve for x
   x = 10,877,667.52/2,877.85
6. Step 6: Final answer
   x = 3,779.79