Finding the Fourth Proportional to 1,072.24, 1,479.96 and 698.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.24 : 1,479.96 = 698.59 : x
2. Step 2: Convert to fraction form
   1,072.24/1,479.96 = 698.59/x
3. Step 3: Cross multiply
   1,072.24x = 1,479.96 × 698.59
4. Step 4: Simplify right side
   1,072.24x = 1,033,885.26
5. Step 5: Solve for x
   x = 1,033,885.26/1,072.24
6. Step 6: Final answer
   x = 964.23