Finding the Fourth Proportional to 1,241.49, 1,713.61 and 710.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,241.49 : 1,713.61 = 710.67 : x
2. Step 2: Convert to fraction form
   1,241.49/1,713.61 = 710.67/x
3. Step 3: Cross multiply
   1,241.49x = 1,713.61 × 710.67
4. Step 4: Simplify right side
   1,241.49x = 1,217,814.54
5. Step 5: Solve for x
   x = 1,217,814.54/1,241.49
6. Step 6: Final answer
   x = 980.93