Finding the Fourth Proportional to 2,662.85, 3,994.88 and 1,276.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.85 : 3,994.88 = 1,276.53 : x
2. Step 2: Convert to fraction form
   2,662.85/3,994.88 = 1,276.53/x
3. Step 3: Cross multiply
   2,662.85x = 3,994.88 × 1,276.53
4. Step 4: Simplify right side
   2,662.85x = 5,099,577.78
5. Step 5: Solve for x
   x = 5,099,577.78/2,662.85
6. Step 6: Final answer
   x = 1,915.09