Finding the Fourth Proportional to 1,205.98, 1,662.88 and 984.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205.98 : 1,662.88 = 984.24 : x
2. Step 2: Convert to fraction form
   1,205.98/1,662.88 = 984.24/x
3. Step 3: Cross multiply
   1,205.98x = 1,662.88 × 984.24
4. Step 4: Simplify right side
   1,205.98x = 1,636,673.01
5. Step 5: Solve for x
   x = 1,636,673.01/1,205.98
6. Step 6: Final answer
   x = 1,357.13