Finding the Fourth Proportional to 2,021.29, 2,794.35 and 2,002.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.29 : 2,794.35 = 2,002.81 : x
2. Step 2: Convert to fraction form
   2,021.29/2,794.35 = 2,002.81/x
3. Step 3: Cross multiply
   2,021.29x = 2,794.35 × 2,002.81
4. Step 4: Simplify right side
   2,021.29x = 5,596,552.12
5. Step 5: Solve for x
   x = 5,596,552.12/2,021.29
6. Step 6: Final answer
   x = 2,768.80