Finding the Fourth Proportional to 2,835.72, 3,910.95 and 2,768.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,835.72 : 3,910.95 = 2,768.09 : x
2. Step 2: Convert to fraction form
   2,835.72/3,910.95 = 2,768.09/x
3. Step 3: Cross multiply
   2,835.72x = 3,910.95 × 2,768.09
4. Step 4: Simplify right side
   2,835.72x = 10,825,842.03
5. Step 5: Solve for x
   x = 10,825,842.03/2,835.72
6. Step 6: Final answer
   x = 3,817.67