Finding the Fourth Proportional to 1,208.39, 1,667.54 and 684.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.39 : 1,667.54 = 684.41 : x
2. Step 2: Convert to fraction form
   1,208.39/1,667.54 = 684.41/x
3. Step 3: Cross multiply
   1,208.39x = 1,667.54 × 684.41
4. Step 4: Simplify right side
   1,208.39x = 1,141,281.05
5. Step 5: Solve for x
   x = 1,141,281.05/1,208.39
6. Step 6: Final answer
   x = 944.46