Finding the Fourth Proportional to 2,559.86, 3,839.58 and 710.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.86 : 3,839.58 = 710.84 : x
2. Step 2: Convert to fraction form
   2,559.86/3,839.58 = 710.84/x
3. Step 3: Cross multiply
   2,559.86x = 3,839.58 × 710.84
4. Step 4: Simplify right side
   2,559.86x = 2,729,327.05
5. Step 5: Solve for x
   x = 2,729,327.05/2,559.86
6. Step 6: Final answer
   x = 1,066.20