Finding the Fourth Proportional to 1,208.41, 1,667.35 and 711.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.41 : 1,667.35 = 711.10 : x
2. Step 2: Convert to fraction form
   1,208.41/1,667.35 = 711.10/x
3. Step 3: Cross multiply
   1,208.41x = 1,667.35 × 711.10
4. Step 4: Simplify right side
   1,208.41x = 1,185,652.59
5. Step 5: Solve for x
   x = 1,185,652.59/1,208.41
6. Step 6: Final answer
   x = 981.17