Finding the Fourth Proportional to 1,343.63, 1,854.41 and 819.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.63 : 1,854.41 = 819.56 : x
2. Step 2: Convert to fraction form
   1,343.63/1,854.41 = 819.56/x
3. Step 3: Cross multiply
   1,343.63x = 1,854.41 × 819.56
4. Step 4: Simplify right side
   1,343.63x = 1,519,786.89
5. Step 5: Solve for x
   x = 1,519,786.89/1,343.63
6. Step 6: Final answer
   x = 1,131.11