Finding the Fourth Proportional to 2,602.31, 3,904.47 and 959.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.31 : 3,904.47 = 959.03 : x
2. Step 2: Convert to fraction form
   2,602.31/3,904.47 = 959.03/x
3. Step 3: Cross multiply
   2,602.31x = 3,904.47 × 959.03
4. Step 4: Simplify right side
   2,602.31x = 3,744,484.34
5. Step 5: Solve for x
   x = 3,744,484.34/2,602.31
6. Step 6: Final answer
   x = 1,438.91