Finding the Fourth Proportional to 1,419.06, 1,958.27 and 789.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.06 : 1,958.27 = 789.58 : x
2. Step 2: Convert to fraction form
   1,419.06/1,958.27 = 789.58/x
3. Step 3: Cross multiply
   1,419.06x = 1,958.27 × 789.58
4. Step 4: Simplify right side
   1,419.06x = 1,546,210.83
5. Step 5: Solve for x
   x = 1,546,210.83/1,419.06
6. Step 6: Final answer
   x = 1,089.60