Finding the Fourth Proportional to 2,080.30, 3,111.27 and 1,850.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.30 : 3,111.27 = 1,850.80 : x
2. Step 2: Convert to fraction form
   2,080.30/3,111.27 = 1,850.80/x
3. Step 3: Cross multiply
   2,080.30x = 3,111.27 × 1,850.80
4. Step 4: Simplify right side
   2,080.30x = 5,758,338.52
5. Step 5: Solve for x
   x = 5,758,338.52/2,080.30
6. Step 6: Final answer
   x = 2,768.03