Finding the Fourth Proportional to 1,419.24, 1,958.52 and 789.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.24 : 1,958.52 = 789.74 : x
2. Step 2: Convert to fraction form
   1,419.24/1,958.52 = 789.74/x
3. Step 3: Cross multiply
   1,419.24x = 1,958.52 × 789.74
4. Step 4: Simplify right side
   1,419.24x = 1,546,721.58
5. Step 5: Solve for x
   x = 1,546,721.58/1,419.24
6. Step 6: Final answer
   x = 1,089.82