Finding the Fourth Proportional to 2,608.86, 3,915.36 and 1,377.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.86 : 3,915.36 = 1,377.30 : x
2. Step 2: Convert to fraction form
   2,608.86/3,915.36 = 1,377.30/x
3. Step 3: Cross multiply
   2,608.86x = 3,915.36 × 1,377.30
4. Step 4: Simplify right side
   2,608.86x = 5,392,625.33
5. Step 5: Solve for x
   x = 5,392,625.33/2,608.86
6. Step 6: Final answer
   x = 2,067.04