Finding the Fourth Proportional to 3,759.50, 5,187.82 and 2,080.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.50 : 5,187.82 = 2,080.78 : x
2. Step 2: Convert to fraction form
   3,759.50/5,187.82 = 2,080.78/x
3. Step 3: Cross multiply
   3,759.50x = 5,187.82 × 2,080.78
4. Step 4: Simplify right side
   3,759.50x = 10,794,712.10
5. Step 5: Solve for x
   x = 10,794,712.10/3,759.50
6. Step 6: Final answer
   x = 2,871.32