Finding the Fourth Proportional to 1,410.25, 1,946.15 and 789.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.25 : 1,946.15 = 789.25 : x
2. Step 2: Convert to fraction form
   1,410.25/1,946.15 = 789.25/x
3. Step 3: Cross multiply
   1,410.25x = 1,946.15 × 789.25
4. Step 4: Simplify right side
   1,410.25x = 1,535,998.89
5. Step 5: Solve for x
   x = 1,535,998.89/1,410.25
6. Step 6: Final answer
   x = 1,089.17