Finding the Fourth Proportional to 3,846.23, 5,771.15 and 2,091.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,846.23 : 5,771.15 = 2,091.17 : x
2. Step 2: Convert to fraction form
   3,846.23/5,771.15 = 2,091.17/x
3. Step 3: Cross multiply
   3,846.23x = 5,771.15 × 2,091.17
4. Step 4: Simplify right side
   3,846.23x = 12,068,435.10
5. Step 5: Solve for x
   x = 12,068,435.10/3,846.23
6. Step 6: Final answer
   x = 3,137.73