Finding the Fourth Proportional to 1,208.16, 1,667.25 and 710.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.16 : 1,667.25 = 710.82 : x
2. Step 2: Convert to fraction form
   1,208.16/1,667.25 = 710.82/x
3. Step 3: Cross multiply
   1,208.16x = 1,667.25 × 710.82
4. Step 4: Simplify right side
   1,208.16x = 1,185,114.65
5. Step 5: Solve for x
   x = 1,185,114.65/1,208.16
6. Step 6: Final answer
   x = 980.93