Finding the Fourth Proportional to 2,736.62, 4,104.78 and 1,276.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.62 : 4,104.78 = 1,276.80 : x
2. Step 2: Convert to fraction form
   2,736.62/4,104.78 = 1,276.80/x
3. Step 3: Cross multiply
   2,736.62x = 4,104.78 × 1,276.80
4. Step 4: Simplify right side
   2,736.62x = 5,240,962.92
5. Step 5: Solve for x
   x = 5,240,962.92/2,736.62
6. Step 6: Final answer
   x = 1,915.12