Finding the Fourth Proportional to 1,679.38, 2,317.31 and 933.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.38 : 2,317.31 = 933.27 : x
2. Step 2: Convert to fraction form
   1,679.38/2,317.31 = 933.27/x
3. Step 3: Cross multiply
   1,679.38x = 2,317.31 × 933.27
4. Step 4: Simplify right side
   1,679.38x = 2,162,666.05
5. Step 5: Solve for x
   x = 2,162,666.05/1,679.38
6. Step 6: Final answer
   x = 1,287.78