Finding the Fourth Proportional to 1,208.14, 1,667.32 and 684.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.14 : 1,667.32 = 684.22 : x
2. Step 2: Convert to fraction form
   1,208.14/1,667.32 = 684.22/x
3. Step 3: Cross multiply
   1,208.14x = 1,667.32 × 684.22
4. Step 4: Simplify right side
   1,208.14x = 1,140,813.69
5. Step 5: Solve for x
   x = 1,140,813.69/1,208.14
6. Step 6: Final answer
   x = 944.27