Finding the Fourth Proportional to 1,593.50, 2,391.69 and 814.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,593.50 : 2,391.69 = 814.05 : x
2. Step 2: Convert to fraction form
   1,593.50/2,391.69 = 814.05/x
3. Step 3: Cross multiply
   1,593.50x = 2,391.69 × 814.05
4. Step 4: Simplify right side
   1,593.50x = 1,946,955.24
5. Step 5: Solve for x
   x = 1,946,955.24/1,593.50
6. Step 6: Final answer
   x = 1,221.81