Finding the Fourth Proportional to 3,783.99, 5,221.83 and 2,105.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.99 : 5,221.83 = 2,105.34 : x
2. Step 2: Convert to fraction form
   3,783.99/5,221.83 = 2,105.34/x
3. Step 3: Cross multiply
   3,783.99x = 5,221.83 × 2,105.34
4. Step 4: Simplify right side
   3,783.99x = 10,993,727.57
5. Step 5: Solve for x
   x = 10,993,727.57/3,783.99
6. Step 6: Final answer
   x = 2,905.33