Finding the Fourth Proportional to 1,066.51, 1,601.50 and 658.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.51 : 1,601.50 = 658.24 : x
2. Step 2: Convert to fraction form
   1,066.51/1,601.50 = 658.24/x
3. Step 3: Cross multiply
   1,066.51x = 1,601.50 × 658.24
4. Step 4: Simplify right side
   1,066.51x = 1,054,168.71
5. Step 5: Solve for x
   x = 1,054,168.71/1,066.51
6. Step 6: Final answer
   x = 988.43