Finding the Fourth Proportional to 1,096.92, 1,640.61 and 633.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.92 : 1,640.61 = 633.56 : x
2. Step 2: Convert to fraction form
   1,096.92/1,640.61 = 633.56/x
3. Step 3: Cross multiply
   1,096.92x = 1,640.61 × 633.56
4. Step 4: Simplify right side
   1,096.92x = 1,039,416.67
5. Step 5: Solve for x
   x = 1,039,416.67/1,096.92
6. Step 6: Final answer
   x = 947.58