Finding the Fourth Proportional to 2,821.94, 3,896.35 and 2,612.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,821.94 : 3,896.35 = 2,612.01 : x
2. Step 2: Convert to fraction form
   2,821.94/3,896.35 = 2,612.01/x
3. Step 3: Cross multiply
   2,821.94x = 3,896.35 × 2,612.01
4. Step 4: Simplify right side
   2,821.94x = 10,177,327.94
5. Step 5: Solve for x
   x = 10,177,327.94/2,821.94
6. Step 6: Final answer
   x = 3,606.50