Finding the Fourth Proportional to 1,404.24, 1,936.96 and 983.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.24 : 1,936.96 = 983.96 : x
2. Step 2: Convert to fraction form
   1,404.24/1,936.96 = 983.96/x
3. Step 3: Cross multiply
   1,404.24x = 1,936.96 × 983.96
4. Step 4: Simplify right side
   1,404.24x = 1,905,891.16
5. Step 5: Solve for x
   x = 1,905,891.16/1,404.24
6. Step 6: Final answer
   x = 1,357.24