Finding the Fourth Proportional to 2,606.02, 3,906.34 and 939.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.02 : 3,906.34 = 939.62 : x
2. Step 2: Convert to fraction form
   2,606.02/3,906.34 = 939.62/x
3. Step 3: Cross multiply
   2,606.02x = 3,906.34 × 939.62
4. Step 4: Simplify right side
   2,606.02x = 3,670,475.19
5. Step 5: Solve for x
   x = 3,670,475.19/2,606.02
6. Step 6: Final answer
   x = 1,408.46