Finding the Fourth Proportional to 3,100.94, 4,276.82 and 2,039.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.94 : 4,276.82 = 2,039.79 : x
2. Step 2: Convert to fraction form
   3,100.94/4,276.82 = 2,039.79/x
3. Step 3: Cross multiply
   3,100.94x = 4,276.82 × 2,039.79
4. Step 4: Simplify right side
   3,100.94x = 8,723,804.47
5. Step 5: Solve for x
   x = 8,723,804.47/3,100.94
6. Step 6: Final answer
   x = 2,813.28