Finding the Fourth Proportional to 2,796.27, 3,855.05 and 2,111.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,796.27 : 3,855.05 = 2,111.91 : x
2. Step 2: Convert to fraction form
   2,796.27/3,855.05 = 2,111.91/x
3. Step 3: Cross multiply
   2,796.27x = 3,855.05 × 2,111.91
4. Step 4: Simplify right side
   2,796.27x = 8,141,508.09
5. Step 5: Solve for x
   x = 8,141,508.09/2,796.27
6. Step 6: Final answer
   x = 2,911.56