Finding the Fourth Proportional to 1,682.79, 2,322.06 and 936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.79 : 2,322.06 = 936.72 : x
2. Step 2: Convert to fraction form
   1,682.79/2,322.06 = 936.72/x
3. Step 3: Cross multiply
   1,682.79x = 2,322.06 × 936.72
4. Step 4: Simplify right side
   1,682.79x = 2,175,120.04
5. Step 5: Solve for x
   x = 2,175,120.04/1,682.79
6. Step 6: Final answer
   x = 1,292.57