Finding the Fourth Proportional to 1,418.57, 1,957.67 and 789.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.57 : 1,957.67 = 789.08 : x
2. Step 2: Convert to fraction form
   1,418.57/1,957.67 = 789.08/x
3. Step 3: Cross multiply
   1,418.57x = 1,957.67 × 789.08
4. Step 4: Simplify right side
   1,418.57x = 1,544,758.24
5. Step 5: Solve for x
   x = 1,544,758.24/1,418.57
6. Step 6: Final answer
   x = 1,088.95