Finding the Fourth Proportional to 1,227.58, 1,844.32 and 789.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.58 : 1,844.32 = 789.67 : x
2. Step 2: Convert to fraction form
   1,227.58/1,844.32 = 789.67/x
3. Step 3: Cross multiply
   1,227.58x = 1,844.32 × 789.67
4. Step 4: Simplify right side
   1,227.58x = 1,456,404.17
5. Step 5: Solve for x
   x = 1,456,404.17/1,227.58
6. Step 6: Final answer
   x = 1,186.40