Finding the Fourth Proportional to 2,839.86, 4,259.76 and 759.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.86 : 4,259.76 = 759.80 : x
2. Step 2: Convert to fraction form
   2,839.86/4,259.76 = 759.80/x
3. Step 3: Cross multiply
   2,839.86x = 4,259.76 × 759.80
4. Step 4: Simplify right side
   2,839.86x = 3,236,561.85
5. Step 5: Solve for x
   x = 3,236,561.85/2,839.86
6. Step 6: Final answer
   x = 1,139.69