Finding the Fourth Proportional to 2,105.86, 3,163.92 and 1,491.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.86 : 3,163.92 = 1,491.34 : x
2. Step 2: Convert to fraction form
   2,105.86/3,163.92 = 1,491.34/x
3. Step 3: Cross multiply
   2,105.86x = 3,163.92 × 1,491.34
4. Step 4: Simplify right side
   2,105.86x = 4,718,480.45
5. Step 5: Solve for x
   x = 4,718,480.45/2,105.86
6. Step 6: Final answer
   x = 2,240.64