Finding the Fourth Proportional to 2,109.59, 3,165.12 and 940.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.59 : 3,165.12 = 940.42 : x
2. Step 2: Convert to fraction form
   2,109.59/3,165.12 = 940.42/x
3. Step 3: Cross multiply
   2,109.59x = 3,165.12 × 940.42
4. Step 4: Simplify right side
   2,109.59x = 2,976,542.15
5. Step 5: Solve for x
   x = 2,976,542.15/2,109.59
6. Step 6: Final answer
   x = 1,410.96