Finding the Fourth Proportional to 2,080.07, 3,116.45 and 1,854.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.07 : 3,116.45 = 1,854.08 : x
2. Step 2: Convert to fraction form
   2,080.07/3,116.45 = 1,854.08/x
3. Step 3: Cross multiply
   2,080.07x = 3,116.45 × 1,854.08
4. Step 4: Simplify right side
   2,080.07x = 5,778,147.62
5. Step 5: Solve for x
   x = 5,778,147.62/2,080.07
6. Step 6: Final answer
   x = 2,777.86