Finding the Fourth Proportional to 2,111.24, 3,168.12 and 940.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.24 : 3,168.12 = 940.88 : x
2. Step 2: Convert to fraction form
   2,111.24/3,168.12 = 940.88/x
3. Step 3: Cross multiply
   2,111.24x = 3,168.12 × 940.88
4. Step 4: Simplify right side
   2,111.24x = 2,980,820.75
5. Step 5: Solve for x
   x = 2,980,820.75/2,111.24
6. Step 6: Final answer
   x = 1,411.88