Finding the Fourth Proportional to 2,294.10, 3,163.86 and 1,668.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,294.10 : 3,163.86 = 1,668.78 : x
2. Step 2: Convert to fraction form
   2,294.10/3,163.86 = 1,668.78/x
3. Step 3: Cross multiply
   2,294.10x = 3,163.86 × 1,668.78
4. Step 4: Simplify right side
   2,294.10x = 5,279,786.29
5. Step 5: Solve for x
   x = 5,279,786.29/2,294.10
6. Step 6: Final answer
   x = 2,301.46