Finding the Fourth Proportional to 3,848.28, 5,308.89 and 2,355.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,848.28 : 5,308.89 = 2,355.60 : x
2. Step 2: Convert to fraction form
   3,848.28/5,308.89 = 2,355.60/x
3. Step 3: Cross multiply
   3,848.28x = 5,308.89 × 2,355.60
4. Step 4: Simplify right side
   3,848.28x = 12,505,621.28
5. Step 5: Solve for x
   x = 12,505,621.28/3,848.28
6. Step 6: Final answer
   x = 3,249.67