Finding the Fourth Proportional to 2,726.94, 3,766.70 and 2,105.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.94 : 3,766.70 = 2,105.15 : x
2. Step 2: Convert to fraction form
   2,726.94/3,766.70 = 2,105.15/x
3. Step 3: Cross multiply
   2,726.94x = 3,766.70 × 2,105.15
4. Step 4: Simplify right side
   2,726.94x = 7,929,467.40
5. Step 5: Solve for x
   x = 7,929,467.40/2,726.94
6. Step 6: Final answer
   x = 2,907.83