Finding the Fourth Proportional to 1,436.92, 1,983.18 and 816.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.92 : 1,983.18 = 816.12 : x
2. Step 2: Convert to fraction form
   1,436.92/1,983.18 = 816.12/x
3. Step 3: Cross multiply
   1,436.92x = 1,983.18 × 816.12
4. Step 4: Simplify right side
   1,436.92x = 1,618,512.86
5. Step 5: Solve for x
   x = 1,618,512.86/1,436.92
6. Step 6: Final answer
   x = 1,126.38