Finding the Fourth Proportional to 1,418.99, 1,958.23 and 789.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.99 : 1,958.23 = 789.52 : x
2. Step 2: Convert to fraction form
   1,418.99/1,958.23 = 789.52/x
3. Step 3: Cross multiply
   1,418.99x = 1,958.23 × 789.52
4. Step 4: Simplify right side
   1,418.99x = 1,546,060.86
5. Step 5: Solve for x
   x = 1,546,060.86/1,418.99
6. Step 6: Final answer
   x = 1,089.55