Finding the Fourth Proportional to 3,698.62, 5,103.98 and 2,020

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.62 : 5,103.98 = 2,020 : x
2. Step 2: Convert to fraction form
   3,698.62/5,103.98 = 2,020/x
3. Step 3: Cross multiply
   3,698.62x = 5,103.98 × 2,020
4. Step 4: Simplify right side
   3,698.62x = 10,310,039.60
5. Step 5: Solve for x
   x = 10,310,039.60/3,698.62
6. Step 6: Final answer
   x = 2,787.54