Finding the Fourth Proportional to 3,698.69, 5,104.10 and 2,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.69 : 5,104.10 = 2,020.10 : x
2. Step 2: Convert to fraction form
   3,698.69/5,104.10 = 2,020.10/x
3. Step 3: Cross multiply
   3,698.69x = 5,104.10 × 2,020.10
4. Step 4: Simplify right side
   3,698.69x = 10,310,771.94
5. Step 5: Solve for x
   x = 10,310,771.94/3,698.69
6. Step 6: Final answer
   x = 2,787.69