Finding the Fourth Proportional to 1,423.68, 1,964.68 and 794.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.68 : 1,964.68 = 794.21 : x
2. Step 2: Convert to fraction form
   1,423.68/1,964.68 = 794.21/x
3. Step 3: Cross multiply
   1,423.68x = 1,964.68 × 794.21
4. Step 4: Simplify right side
   1,423.68x = 1,560,356.69
5. Step 5: Solve for x
   x = 1,560,356.69/1,423.68
6. Step 6: Final answer
   x = 1,096.01