Finding the Fourth Proportional to 3,257.10, 4,865.86 and 2,077.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,257.10 : 4,865.86 = 2,077.72 : x
2. Step 2: Convert to fraction form
   3,257.10/4,865.86 = 2,077.72/x
3. Step 3: Cross multiply
   3,257.10x = 4,865.86 × 2,077.72
4. Step 4: Simplify right side
   3,257.10x = 10,109,894.64
5. Step 5: Solve for x
   x = 10,109,894.64/3,257.10
6. Step 6: Final answer
   x = 3,103.96