Finding the Fourth Proportional to 2,080.55, 3,111.64 and 1,851.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.55 : 3,111.64 = 1,851.05 : x
2. Step 2: Convert to fraction form
   2,080.55/3,111.64 = 1,851.05/x
3. Step 3: Cross multiply
   2,080.55x = 3,111.64 × 1,851.05
4. Step 4: Simplify right side
   2,080.55x = 5,759,801.22
5. Step 5: Solve for x
   x = 5,759,801.22/2,080.55
6. Step 6: Final answer
   x = 2,768.40