Finding the Fourth Proportional to 2,759.33, 4,139.27 and 909.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,759.33 : 4,139.27 = 909.69 : x
2. Step 2: Convert to fraction form
   2,759.33/4,139.27 = 909.69/x
3. Step 3: Cross multiply
   2,759.33x = 4,139.27 × 909.69
4. Step 4: Simplify right side
   2,759.33x = 3,765,452.53
5. Step 5: Solve for x
   x = 3,765,452.53/2,759.33
6. Step 6: Final answer
   x = 1,364.63