Finding the Fourth Proportional to 1,090.82, 1,632.18 and 658.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090.82 : 1,632.18 = 658.28 : x
2. Step 2: Convert to fraction form
   1,090.82/1,632.18 = 658.28/x
3. Step 3: Cross multiply
   1,090.82x = 1,632.18 × 658.28
4. Step 4: Simplify right side
   1,090.82x = 1,074,431.45
5. Step 5: Solve for x
   x = 1,074,431.45/1,090.82
6. Step 6: Final answer
   x = 984.98