Finding the Fourth Proportional to 3,680.69, 5,081.24 and 2,839.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.69 : 5,081.24 = 2,839.51 : x
2. Step 2: Convert to fraction form
   3,680.69/5,081.24 = 2,839.51/x
3. Step 3: Cross multiply
   3,680.69x = 5,081.24 × 2,839.51
4. Step 4: Simplify right side
   3,680.69x = 14,428,210.22
5. Step 5: Solve for x
   x = 14,428,210.22/3,680.69
6. Step 6: Final answer
   x = 3,919.97