Finding the Fourth Proportional to 1,682.31, 2,321.22 and 936.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.31 : 2,321.22 = 936.03 : x
2. Step 2: Convert to fraction form
   1,682.31/2,321.22 = 936.03/x
3. Step 3: Cross multiply
   1,682.31x = 2,321.22 × 936.03
4. Step 4: Simplify right side
   1,682.31x = 2,172,731.56
5. Step 5: Solve for x
   x = 2,172,731.56/1,682.31
6. Step 6: Final answer
   x = 1,291.52