Finding the Fourth Proportional to 1,208.14, 1,667.54 and 684.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.14 : 1,667.54 = 684.48 : x
2. Step 2: Convert to fraction form
   1,208.14/1,667.54 = 684.48/x
3. Step 3: Cross multiply
   1,208.14x = 1,667.54 × 684.48
4. Step 4: Simplify right side
   1,208.14x = 1,141,397.78
5. Step 5: Solve for x
   x = 1,141,397.78/1,208.14
6. Step 6: Final answer
   x = 944.76