Finding the Fourth Proportional to 2,601.72, 3,904.12 and 959.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.72 : 3,904.12 = 959.42 : x
2. Step 2: Convert to fraction form
   2,601.72/3,904.12 = 959.42/x
3. Step 3: Cross multiply
   2,601.72x = 3,904.12 × 959.42
4. Step 4: Simplify right side
   2,601.72x = 3,745,690.81
5. Step 5: Solve for x
   x = 3,745,690.81/2,601.72
6. Step 6: Final answer
   x = 1,439.70