Finding the Fourth Proportional to 3,698.10, 5,103.41 and 2,019.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.10 : 5,103.41 = 2,019.51 : x
2. Step 2: Convert to fraction form
   3,698.10/5,103.41 = 2,019.51/x
3. Step 3: Cross multiply
   3,698.10x = 5,103.41 × 2,019.51
4. Step 4: Simplify right side
   3,698.10x = 10,306,377.43
5. Step 5: Solve for x
   x = 10,306,377.43/3,698.10
6. Step 6: Final answer
   x = 2,786.94