Finding the Fourth Proportional to 1,003.24, 1,499.09 and 830.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.24 : 1,499.09 = 830.44 : x
2. Step 2: Convert to fraction form
   1,003.24/1,499.09 = 830.44/x
3. Step 3: Cross multiply
   1,003.24x = 1,499.09 × 830.44
4. Step 4: Simplify right side
   1,003.24x = 1,244,904.30
5. Step 5: Solve for x
   x = 1,244,904.30/1,003.24
6. Step 6: Final answer
   x = 1,240.88