Finding the Fourth Proportional to 1,436.52, 1,982.38 and 815.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.52 : 1,982.38 = 815.48 : x
2. Step 2: Convert to fraction form
   1,436.52/1,982.38 = 815.48/x
3. Step 3: Cross multiply
   1,436.52x = 1,982.38 × 815.48
4. Step 4: Simplify right side
   1,436.52x = 1,616,591.24
5. Step 5: Solve for x
   x = 1,616,591.24/1,436.52
6. Step 6: Final answer
   x = 1,125.35