Finding the Fourth Proportional to 1,069.37, 1,603.89 and 658.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.37 : 1,603.89 = 658.29 : x
2. Step 2: Convert to fraction form
   1,069.37/1,603.89 = 658.29/x
3. Step 3: Cross multiply
   1,069.37x = 1,603.89 × 658.29
4. Step 4: Simplify right side
   1,069.37x = 1,055,824.75
5. Step 5: Solve for x
   x = 1,055,824.75/1,069.37
6. Step 6: Final answer
   x = 987.34