Finding the Fourth Proportional to 1,151.30, 1,724.89 and 699.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.30 : 1,724.89 = 699.68 : x
2. Step 2: Convert to fraction form
   1,151.30/1,724.89 = 699.68/x
3. Step 3: Cross multiply
   1,151.30x = 1,724.89 × 699.68
4. Step 4: Simplify right side
   1,151.30x = 1,206,861.94
5. Step 5: Solve for x
   x = 1,206,861.94/1,151.30
6. Step 6: Final answer
   x = 1,048.26