Finding the Fourth Proportional to 2,759.27, 4,137.35 and 909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,759.27 : 4,137.35 = 909.86 : x
2. Step 2: Convert to fraction form
   2,759.27/4,137.35 = 909.86/x
3. Step 3: Cross multiply
   2,759.27x = 4,137.35 × 909.86
4. Step 4: Simplify right side
   2,759.27x = 3,764,384.03
5. Step 5: Solve for x
   x = 3,764,384.03/2,759.27
6. Step 6: Final answer
   x = 1,364.27