Finding the Fourth Proportional to 1,679.30, 2,317.32 and 933.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.30 : 2,317.32 = 933.24 : x
2. Step 2: Convert to fraction form
   1,679.30/2,317.32 = 933.24/x
3. Step 3: Cross multiply
   1,679.30x = 2,317.32 × 933.24
4. Step 4: Simplify right side
   1,679.30x = 2,162,615.72
5. Step 5: Solve for x
   x = 2,162,615.72/1,679.30
6. Step 6: Final answer
   x = 1,287.81