Finding the Fourth Proportional to 1,096.99, 1,513.48 and 724.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.99 : 1,513.48 = 724.15 : x
2. Step 2: Convert to fraction form
   1,096.99/1,513.48 = 724.15/x
3. Step 3: Cross multiply
   1,096.99x = 1,513.48 × 724.15
4. Step 4: Simplify right side
   1,096.99x = 1,095,986.54
5. Step 5: Solve for x
   x = 1,095,986.54/1,096.99
6. Step 6: Final answer
   x = 999.09