Finding the Fourth Proportional to 3,783.76, 5,221.18 and 2,104.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.76 : 5,221.18 = 2,104.90 : x
2. Step 2: Convert to fraction form
   3,783.76/5,221.18 = 2,104.90/x
3. Step 3: Cross multiply
   3,783.76x = 5,221.18 × 2,104.90
4. Step 4: Simplify right side
   3,783.76x = 10,990,061.78
5. Step 5: Solve for x
   x = 10,990,061.78/3,783.76
6. Step 6: Final answer
   x = 2,904.53