Finding the Fourth Proportional to 2,603.18, 3,904.38 and 959.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.18 : 3,904.38 = 959.34 : x
2. Step 2: Convert to fraction form
   2,603.18/3,904.38 = 959.34/x
3. Step 3: Cross multiply
   2,603.18x = 3,904.38 × 959.34
4. Step 4: Simplify right side
   2,603.18x = 3,745,627.91
5. Step 5: Solve for x
   x = 3,745,627.91/2,603.18
6. Step 6: Final answer
   x = 1,438.87