Finding the Fourth Proportional to 2,708.23, 4,061.98 and 859.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,708.23 : 4,061.98 = 859.53 : x
2. Step 2: Convert to fraction form
   2,708.23/4,061.98 = 859.53/x
3. Step 3: Cross multiply
   2,708.23x = 4,061.98 × 859.53
4. Step 4: Simplify right side
   2,708.23x = 3,491,393.67
5. Step 5: Solve for x
   x = 3,491,393.67/2,708.23
6. Step 6: Final answer
   x = 1,289.18