Finding the Fourth Proportional to 2,602.47, 3,903.59 and 958.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.47 : 3,903.59 = 958.91 : x
2. Step 2: Convert to fraction form
   2,602.47/3,903.59 = 958.91/x
3. Step 3: Cross multiply
   2,602.47x = 3,903.59 × 958.91
4. Step 4: Simplify right side
   2,602.47x = 3,743,167.17
5. Step 5: Solve for x
   x = 3,743,167.17/2,602.47
6. Step 6: Final answer
   x = 1,438.31