Finding the Fourth Proportional to 1,243.83, 1,716.49 and 684.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.83 : 1,716.49 = 684.34 : x
2. Step 2: Convert to fraction form
   1,243.83/1,716.49 = 684.34/x
3. Step 3: Cross multiply
   1,243.83x = 1,716.49 × 684.34
4. Step 4: Simplify right side
   1,243.83x = 1,174,665.77
5. Step 5: Solve for x
   x = 1,174,665.77/1,243.83
6. Step 6: Final answer
   x = 944.39