Finding the Fourth Proportional to 3,698.40, 5,103.80 and 2,019.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.40 : 5,103.80 = 2,019.82 : x
2. Step 2: Convert to fraction form
   3,698.40/5,103.80 = 2,019.82/x
3. Step 3: Cross multiply
   3,698.40x = 5,103.80 × 2,019.82
4. Step 4: Simplify right side
   3,698.40x = 10,308,757.32
5. Step 5: Solve for x
   x = 10,308,757.32/3,698.40
6. Step 6: Final answer
   x = 2,787.36