Finding the Fourth Proportional to 1,682.56, 2,321.86 and 936.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.56 : 2,321.86 = 936.49 : x
2. Step 2: Convert to fraction form
   1,682.56/2,321.86 = 936.49/x
3. Step 3: Cross multiply
   1,682.56x = 2,321.86 × 936.49
4. Step 4: Simplify right side
   1,682.56x = 2,174,398.67
5. Step 5: Solve for x
   x = 2,174,398.67/1,682.56
6. Step 6: Final answer
   x = 1,292.32