Finding the Fourth Proportional to 3,680.51, 5,078.83 and 2,087.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.51 : 5,078.83 = 2,087.19 : x
2. Step 2: Convert to fraction form
   3,680.51/5,078.83 = 2,087.19/x
3. Step 3: Cross multiply
   3,680.51x = 5,078.83 × 2,087.19
4. Step 4: Simplify right side
   3,680.51x = 10,600,483.19
5. Step 5: Solve for x
   x = 10,600,483.19/3,680.51
6. Step 6: Final answer
   x = 2,880.17