Finding the Fourth Proportional to 1,244.10, 1,716.89 and 684.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,244.10 : 1,716.89 = 684.59 : x
2. Step 2: Convert to fraction form
   1,244.10/1,716.89 = 684.59/x
3. Step 3: Cross multiply
   1,244.10x = 1,716.89 × 684.59
4. Step 4: Simplify right side
   1,244.10x = 1,175,353.72
5. Step 5: Solve for x
   x = 1,175,353.72/1,244.10
6. Step 6: Final answer
   x = 944.74