Finding the Fourth Proportional to 2,111.24, 3,167.26 and 940.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.24 : 3,167.26 = 940.80 : x
2. Step 2: Convert to fraction form
   2,111.24/3,167.26 = 940.80/x
3. Step 3: Cross multiply
   2,111.24x = 3,167.26 × 940.80
4. Step 4: Simplify right side
   2,111.24x = 2,979,758.21
5. Step 5: Solve for x
   x = 2,979,758.21/2,111.24
6. Step 6: Final answer
   x = 1,411.38