Finding the Fourth Proportional to 1,391.82, 1,919.62 and 894.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.82 : 1,919.62 = 894.50 : x
2. Step 2: Convert to fraction form
   1,391.82/1,919.62 = 894.50/x
3. Step 3: Cross multiply
   1,391.82x = 1,919.62 × 894.50
4. Step 4: Simplify right side
   1,391.82x = 1,717,093.05
5. Step 5: Solve for x
   x = 1,717,093.05/1,391.82
6. Step 6: Final answer
   x = 1,233.71