Finding the Fourth Proportional to 3,651.85, 5,039.69 and 2,080.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651.85 : 5,039.69 = 2,080.05 : x
2. Step 2: Convert to fraction form
   3,651.85/5,039.69 = 2,080.05/x
3. Step 3: Cross multiply
   3,651.85x = 5,039.69 × 2,080.05
4. Step 4: Simplify right side
   3,651.85x = 10,482,777.89
5. Step 5: Solve for x
   x = 10,482,777.89/3,651.85
6. Step 6: Final answer
   x = 2,870.54