Finding the Fourth Proportional to 3,698.70, 5,104.17 and 2,020.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.70 : 5,104.17 = 2,020.09 : x
2. Step 2: Convert to fraction form
   3,698.70/5,104.17 = 2,020.09/x
3. Step 3: Cross multiply
   3,698.70x = 5,104.17 × 2,020.09
4. Step 4: Simplify right side
   3,698.70x = 10,310,882.78
5. Step 5: Solve for x
   x = 10,310,882.78/3,698.70
6. Step 6: Final answer
   x = 2,787.70