Finding the Fourth Proportional to 3,910.47, 5,863.27 and 2,180.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.47 : 5,863.27 = 2,180.31 : x
2. Step 2: Convert to fraction form
   3,910.47/5,863.27 = 2,180.31/x
3. Step 3: Cross multiply
   3,910.47x = 5,863.27 × 2,180.31
4. Step 4: Simplify right side
   3,910.47x = 12,783,746.21
5. Step 5: Solve for x
   x = 12,783,746.21/3,910.47
6. Step 6: Final answer
   x = 3,269.11