Finding the Fourth Proportional to 1,243.47, 1,716.00 and 676.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.47 : 1,716.00 = 676.31 : x
2. Step 2: Convert to fraction form
   1,243.47/1,716.00 = 676.31/x
3. Step 3: Cross multiply
   1,243.47x = 1,716.00 × 676.31
4. Step 4: Simplify right side
   1,243.47x = 1,160,551.57
5. Step 5: Solve for x
   x = 1,160,551.57/1,243.47
6. Step 6: Final answer
   x = 933.31