Finding the Fourth Proportional to 3,677.39, 5,074.78 and 2,105.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.39 : 5,074.78 = 2,105.48 : x
2. Step 2: Convert to fraction form
   3,677.39/5,074.78 = 2,105.48/x
3. Step 3: Cross multiply
   3,677.39x = 5,074.78 × 2,105.48
4. Step 4: Simplify right side
   3,677.39x = 10,684,847.79
5. Step 5: Solve for x
   x = 10,684,847.79/3,677.39
6. Step 6: Final answer
   x = 2,905.55