Finding the Fourth Proportional to 1,096.56, 1,643.64 and 480.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.56 : 1,643.64 = 480.04 : x
2. Step 2: Convert to fraction form
   1,096.56/1,643.64 = 480.04/x
3. Step 3: Cross multiply
   1,096.56x = 1,643.64 × 480.04
4. Step 4: Simplify right side
   1,096.56x = 789,012.95
5. Step 5: Solve for x
   x = 789,012.95/1,096.56
6. Step 6: Final answer
   x = 719.53