Finding the Fourth Proportional to 1,418.82, 1,957.93 and 789.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.82 : 1,957.93 = 789.34 : x
2. Step 2: Convert to fraction form
   1,418.82/1,957.93 = 789.34/x
3. Step 3: Cross multiply
   1,418.82x = 1,957.93 × 789.34
4. Step 4: Simplify right side
   1,418.82x = 1,545,472.47
5. Step 5: Solve for x
   x = 1,545,472.47/1,418.82
6. Step 6: Final answer
   x = 1,089.27