Finding the Fourth Proportional to 2,872.42, 3,963.27 and 2,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.42 : 3,963.27 = 2,085.10 : x
2. Step 2: Convert to fraction form
   2,872.42/3,963.27 = 2,085.10/x
3. Step 3: Cross multiply
   2,872.42x = 3,963.27 × 2,085.10
4. Step 4: Simplify right side
   2,872.42x = 8,263,814.28
5. Step 5: Solve for x
   x = 8,263,814.28/2,872.42
6. Step 6: Final answer
   x = 2,876.95