Finding the Fourth Proportional to 3,894.01, 5,863.86 and 2,805.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,894.01 : 5,863.86 = 2,805.91 : x
2. Step 2: Convert to fraction form
   3,894.01/5,863.86 = 2,805.91/x
3. Step 3: Cross multiply
   3,894.01x = 5,863.86 × 2,805.91
4. Step 4: Simplify right side
   3,894.01x = 16,453,449.38
5. Step 5: Solve for x
   x = 16,453,449.38/3,894.01
6. Step 6: Final answer
   x = 4,225.32