Finding the Fourth Proportional to 1,418.49, 1,957.50 and 789.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.49 : 1,957.50 = 789.02 : x
2. Step 2: Convert to fraction form
   1,418.49/1,957.50 = 789.02/x
3. Step 3: Cross multiply
   1,418.49x = 1,957.50 × 789.02
4. Step 4: Simplify right side
   1,418.49x = 1,544,496.86
5. Step 5: Solve for x
   x = 1,544,496.86/1,418.49
6. Step 6: Final answer
   x = 1,088.83