Finding the Fourth Proportional to 3,783.15, 5,220.73 and 2,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.15 : 5,220.73 = 2,104.72 : x
2. Step 2: Convert to fraction form
   3,783.15/5,220.73 = 2,104.72/x
3. Step 3: Cross multiply
   3,783.15x = 5,220.73 × 2,104.72
4. Step 4: Simplify right side
   3,783.15x = 10,988,164.42
5. Step 5: Solve for x
   x = 10,988,164.42/3,783.15
6. Step 6: Final answer
   x = 2,904.50