Finding the Fourth Proportional to 3,697.92, 5,103.60 and 2,105.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,697.92 : 5,103.60 = 2,105.18 : x
2. Step 2: Convert to fraction form
   3,697.92/5,103.60 = 2,105.18/x
3. Step 3: Cross multiply
   3,697.92x = 5,103.60 × 2,105.18
4. Step 4: Simplify right side
   3,697.92x = 10,743,996.65
5. Step 5: Solve for x
   x = 10,743,996.65/3,697.92
6. Step 6: Final answer
   x = 2,905.42