Finding the Fourth Proportional to 3,783.98, 5,221.95 and 2,105.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.98 : 5,221.95 = 2,105.38 : x
2. Step 2: Convert to fraction form
   3,783.98/5,221.95 = 2,105.38/x
3. Step 3: Cross multiply
   3,783.98x = 5,221.95 × 2,105.38
4. Step 4: Simplify right side
   3,783.98x = 10,994,210.57
5. Step 5: Solve for x
   x = 10,994,210.57/3,783.98
6. Step 6: Final answer
   x = 2,905.46