Finding the Fourth Proportional to 2,821.82, 3,894.56 and 2,697.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,821.82 : 3,894.56 = 2,697.22 : x
2. Step 2: Convert to fraction form
   2,821.82/3,894.56 = 2,697.22/x
3. Step 3: Cross multiply
   2,821.82x = 3,894.56 × 2,697.22
4. Step 4: Simplify right side
   2,821.82x = 10,504,485.12
5. Step 5: Solve for x
   x = 10,504,485.12/2,821.82
6. Step 6: Final answer
   x = 3,722.59