Finding the Fourth Proportional to 1,682.47, 2,321.56 and 936.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.47 : 2,321.56 = 936.43 : x
2. Step 2: Convert to fraction form
   1,682.47/2,321.56 = 936.43/x
3. Step 3: Cross multiply
   1,682.47x = 2,321.56 × 936.43
4. Step 4: Simplify right side
   1,682.47x = 2,173,978.43
5. Step 5: Solve for x
   x = 2,173,978.43/1,682.47
6. Step 6: Final answer
   x = 1,292.14