Finding the Fourth Proportional to 1,096.83, 1,643.63 and 658.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.83 : 1,643.63 = 658.17 : x
2. Step 2: Convert to fraction form
   1,096.83/1,643.63 = 658.17/x
3. Step 3: Cross multiply
   1,096.83x = 1,643.63 × 658.17
4. Step 4: Simplify right side
   1,096.83x = 1,081,784.67
5. Step 5: Solve for x
   x = 1,081,784.67/1,096.83
6. Step 6: Final answer
   x = 986.28