Finding the Fourth Proportional to 1,208.06, 1,667.16 and 684.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.06 : 1,667.16 = 684.13 : x
2. Step 2: Convert to fraction form
   1,208.06/1,667.16 = 684.13/x
3. Step 3: Cross multiply
   1,208.06x = 1,667.16 × 684.13
4. Step 4: Simplify right side
   1,208.06x = 1,140,550.00
5. Step 5: Solve for x
   x = 1,140,550.00/1,208.06
6. Step 6: Final answer
   x = 944.12