Finding the Fourth Proportional to 3,940.82, 5,909.27 and 2,297.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.82 : 5,909.27 = 2,297.78 : x
2. Step 2: Convert to fraction form
   3,940.82/5,909.27 = 2,297.78/x
3. Step 3: Cross multiply
   3,940.82x = 5,909.27 × 2,297.78
4. Step 4: Simplify right side
   3,940.82x = 13,578,202.42
5. Step 5: Solve for x
   x = 13,578,202.42/3,940.82
6. Step 6: Final answer
   x = 3,445.53