Finding the Fourth Proportional to 2,812.00, 3,880.89 and 2,066.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,812.00 : 3,880.89 = 2,066.21 : x
2. Step 2: Convert to fraction form
   2,812.00/3,880.89 = 2,066.21/x
3. Step 3: Cross multiply
   2,812.00x = 3,880.89 × 2,066.21
4. Step 4: Simplify right side
   2,812.00x = 8,018,733.73
5. Step 5: Solve for x
   x = 8,018,733.73/2,812.00
6. Step 6: Final answer
   x = 2,851.62