Finding the Fourth Proportional to 1,096.69, 1,643.18 and 662.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.69 : 1,643.18 = 662.94 : x
2. Step 2: Convert to fraction form
   1,096.69/1,643.18 = 662.94/x
3. Step 3: Cross multiply
   1,096.69x = 1,643.18 × 662.94
4. Step 4: Simplify right side
   1,096.69x = 1,089,327.30
5. Step 5: Solve for x
   x = 1,089,327.30/1,096.69
6. Step 6: Final answer
   x = 993.28