Finding the Fourth Proportional to 2,821.47, 3,893.94 and 2,036.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,821.47 : 3,893.94 = 2,036.01 : x
2. Step 2: Convert to fraction form
   2,821.47/3,893.94 = 2,036.01/x
3. Step 3: Cross multiply
   2,821.47x = 3,893.94 × 2,036.01
4. Step 4: Simplify right side
   2,821.47x = 7,928,100.78
5. Step 5: Solve for x
   x = 7,928,100.78/2,821.47
6. Step 6: Final answer
   x = 2,809.92