Finding the Fourth Proportional to 3,698.74, 5,104.20 and 2,020.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.74 : 5,104.20 = 2,020.16 : x
2. Step 2: Convert to fraction form
   3,698.74/5,104.20 = 2,020.16/x
3. Step 3: Cross multiply
   3,698.74x = 5,104.20 × 2,020.16
4. Step 4: Simplify right side
   3,698.74x = 10,311,300.67
5. Step 5: Solve for x
   x = 10,311,300.67/3,698.74
6. Step 6: Final answer
   x = 2,787.79