Finding the Fourth Proportional to 2,662.76, 3,994.52 and 1,276.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.76 : 3,994.52 = 1,276.79 : x
2. Step 2: Convert to fraction form
   2,662.76/3,994.52 = 1,276.79/x
3. Step 3: Cross multiply
   2,662.76x = 3,994.52 × 1,276.79
4. Step 4: Simplify right side
   2,662.76x = 5,100,136.83
5. Step 5: Solve for x
   x = 5,100,136.83/2,662.76
6. Step 6: Final answer
   x = 1,915.36