Finding the Fourth Proportional to 1,073.59, 1,609.42 and 488.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.59 : 1,609.42 = 488.28 : x
2. Step 2: Convert to fraction form
   1,073.59/1,609.42 = 488.28/x
3. Step 3: Cross multiply
   1,073.59x = 1,609.42 × 488.28
4. Step 4: Simplify right side
   1,073.59x = 785,844.27
5. Step 5: Solve for x
   x = 785,844.27/1,073.59
6. Step 6: Final answer
   x = 731.98