Finding the Fourth Proportional to 1,241.87, 1,713.78 and 682.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,241.87 : 1,713.78 = 682.31 : x
2. Step 2: Convert to fraction form
   1,241.87/1,713.78 = 682.31/x
3. Step 3: Cross multiply
   1,241.87x = 1,713.78 × 682.31
4. Step 4: Simplify right side
   1,241.87x = 1,169,333.52
5. Step 5: Solve for x
   x = 1,169,333.52/1,241.87
6. Step 6: Final answer
   x = 941.59