Finding the Fourth Proportional to 1,419.26, 1,958.61 and 789.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.26 : 1,958.61 = 789.82 : x
2. Step 2: Convert to fraction form
   1,419.26/1,958.61 = 789.82/x
3. Step 3: Cross multiply
   1,419.26x = 1,958.61 × 789.82
4. Step 4: Simplify right side
   1,419.26x = 1,546,947.42
5. Step 5: Solve for x
   x = 1,546,947.42/1,419.26
6. Step 6: Final answer
   x = 1,089.97