Finding the Fourth Proportional to 2,606.35, 3,909.18 and 940.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.35 : 3,909.18 = 940.30 : x
2. Step 2: Convert to fraction form
   2,606.35/3,909.18 = 940.30/x
3. Step 3: Cross multiply
   2,606.35x = 3,909.18 × 940.30
4. Step 4: Simplify right side
   2,606.35x = 3,675,783.93
5. Step 5: Solve for x
   x = 3,675,783.93/2,606.35
6. Step 6: Final answer
   x = 1,410.32