Finding the Fourth Proportional to 3,520.97, 5,289.65 and 2,061.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,520.97 : 5,289.65 = 2,061.15 : x
2. Step 2: Convert to fraction form
   3,520.97/5,289.65 = 2,061.15/x
3. Step 3: Cross multiply
   3,520.97x = 5,289.65 × 2,061.15
4. Step 4: Simplify right side
   3,520.97x = 10,902,762.10
5. Step 5: Solve for x
   x = 10,902,762.10/3,520.97
6. Step 6: Final answer
   x = 3,096.52