Finding the Fourth Proportional to 2,460.28, 3,689.88 and 728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.28 : 3,689.88 = 728.50 : x
2. Step 2: Convert to fraction form
   2,460.28/3,689.88 = 728.50/x
3. Step 3: Cross multiply
   2,460.28x = 3,689.88 × 728.50
4. Step 4: Simplify right side
   2,460.28x = 2,688,077.58
5. Step 5: Solve for x
   x = 2,688,077.58/2,460.28
6. Step 6: Final answer
   x = 1,092.59