Finding the Fourth Proportional to 1,354.18, 2,031.59 and 488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.18 : 2,031.59 = 488.50 : x
2. Step 2: Convert to fraction form
   1,354.18/2,031.59 = 488.50/x
3. Step 3: Cross multiply
   1,354.18x = 2,031.59 × 488.50
4. Step 4: Simplify right side
   1,354.18x = 992,431.72
5. Step 5: Solve for x
   x = 992,431.72/1,354.18
6. Step 6: Final answer
   x = 732.87