Finding the Fourth Proportional to 2,602.79, 3,904.43 and 959.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.79 : 3,904.43 = 959.37 : x
2. Step 2: Convert to fraction form
   2,602.79/3,904.43 = 959.37/x
3. Step 3: Cross multiply
   2,602.79x = 3,904.43 × 959.37
4. Step 4: Simplify right side
   2,602.79x = 3,745,788.21
5. Step 5: Solve for x
   x = 3,745,788.21/2,602.79
6. Step 6: Final answer
   x = 1,439.15