Finding the Fourth Proportional to 1,243.82, 1,716.51 and 684.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.82 : 1,716.51 = 684.34 : x
2. Step 2: Convert to fraction form
   1,243.82/1,716.51 = 684.34/x
3. Step 3: Cross multiply
   1,243.82x = 1,716.51 × 684.34
4. Step 4: Simplify right side
   1,243.82x = 1,174,676.45
5. Step 5: Solve for x
   x = 1,174,676.45/1,243.82
6. Step 6: Final answer
   x = 944.41