Finding the Fourth Proportional to 1,097.37, 1,644.81 and 480.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.37 : 1,644.81 = 480.30 : x
2. Step 2: Convert to fraction form
   1,097.37/1,644.81 = 480.30/x
3. Step 3: Cross multiply
   1,097.37x = 1,644.81 × 480.30
4. Step 4: Simplify right side
   1,097.37x = 790,008.15
5. Step 5: Solve for x
   x = 790,008.15/1,097.37
6. Step 6: Final answer
   x = 719.91