Finding the Fourth Proportional to 3,698.53, 5,103.91 and 2,019.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.53 : 5,103.91 = 2,019.94 : x
2. Step 2: Convert to fraction form
   3,698.53/5,103.91 = 2,019.94/x
3. Step 3: Cross multiply
   3,698.53x = 5,103.91 × 2,019.94
4. Step 4: Simplify right side
   3,698.53x = 10,309,591.97
5. Step 5: Solve for x
   x = 10,309,591.97/3,698.53
6. Step 6: Final answer
   x = 2,787.48