Finding the Fourth Proportional to 1,096.89, 1,643.92 and 446.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.89 : 1,643.92 = 446.87 : x
2. Step 2: Convert to fraction form
   1,096.89/1,643.92 = 446.87/x
3. Step 3: Cross multiply
   1,096.89x = 1,643.92 × 446.87
4. Step 4: Simplify right side
   1,096.89x = 734,618.53
5. Step 5: Solve for x
   x = 734,618.53/1,096.89
6. Step 6: Final answer
   x = 669.73