Finding the Fourth Proportional to 2,608.58, 3,910.44 and 1,308.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.58 : 3,910.44 = 1,308.54 : x
2. Step 2: Convert to fraction form
   2,608.58/3,910.44 = 1,308.54/x
3. Step 3: Cross multiply
   2,608.58x = 3,910.44 × 1,308.54
4. Step 4: Simplify right side
   2,608.58x = 5,116,967.16
5. Step 5: Solve for x
   x = 5,116,967.16/2,608.58
6. Step 6: Final answer
   x = 1,961.59