Finding the Fourth Proportional to 1,679.27, 2,317.33 and 933.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.27 : 2,317.33 = 933.20 : x
2. Step 2: Convert to fraction form
   1,679.27/2,317.33 = 933.20/x
3. Step 3: Cross multiply
   1,679.27x = 2,317.33 × 933.20
4. Step 4: Simplify right side
   1,679.27x = 2,162,530.63
5. Step 5: Solve for x
   x = 2,162,530.63/1,679.27
6. Step 6: Final answer
   x = 1,287.78