Finding the Fourth Proportional to 3,761.75, 5,191.22 and 2,105.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.75 : 5,191.22 = 2,105.75 : x
2. Step 2: Convert to fraction form
   3,761.75/5,191.22 = 2,105.75/x
3. Step 3: Cross multiply
   3,761.75x = 5,191.22 × 2,105.75
4. Step 4: Simplify right side
   3,761.75x = 10,931,411.52
5. Step 5: Solve for x
   x = 10,931,411.52/3,761.75
6. Step 6: Final answer
   x = 2,905.94