Finding the Fourth Proportional to 3,698.89, 5,104.64 and 2,020.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.89 : 5,104.64 = 2,020.23 : x
2. Step 2: Convert to fraction form
   3,698.89/5,104.64 = 2,020.23/x
3. Step 3: Cross multiply
   3,698.89x = 5,104.64 × 2,020.23
4. Step 4: Simplify right side
   3,698.89x = 10,312,551.92
5. Step 5: Solve for x
   x = 10,312,551.92/3,698.89
6. Step 6: Final answer
   x = 2,788.01