Finding the Fourth Proportional to 2,081.30, 3,112.77 and 1,851.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.30 : 3,112.77 = 1,851.80 : x
2. Step 2: Convert to fraction form
   2,081.30/3,112.77 = 1,851.80/x
3. Step 3: Cross multiply
   2,081.30x = 3,112.77 × 1,851.80
4. Step 4: Simplify right side
   2,081.30x = 5,764,227.49
5. Step 5: Solve for x
   x = 5,764,227.49/2,081.30
6. Step 6: Final answer
   x = 2,769.53