Finding the Fourth Proportional to 1,072.25, 1,479.72 and 658.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.25 : 1,479.72 = 658.25 : x
2. Step 2: Convert to fraction form
   1,072.25/1,479.72 = 658.25/x
3. Step 3: Cross multiply
   1,072.25x = 1,479.72 × 658.25
4. Step 4: Simplify right side
   1,072.25x = 974,025.69
5. Step 5: Solve for x
   x = 974,025.69/1,072.25
6. Step 6: Final answer
   x = 908.39