Finding the Fourth Proportional to 1,243.82, 1,716.72 and 948.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.82 : 1,716.72 = 948.56 : x
2. Step 2: Convert to fraction form
   1,243.82/1,716.72 = 948.56/x
3. Step 3: Cross multiply
   1,243.82x = 1,716.72 × 948.56
4. Step 4: Simplify right side
   1,243.82x = 1,628,411.92
5. Step 5: Solve for x
   x = 1,628,411.92/1,243.82
6. Step 6: Final answer
   x = 1,309.20