Finding the Fourth Proportional to 1,343.59, 1,854.21 and 819.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.59 : 1,854.21 = 819.25 : x
2. Step 2: Convert to fraction form
   1,343.59/1,854.21 = 819.25/x
3. Step 3: Cross multiply
   1,343.59x = 1,854.21 × 819.25
4. Step 4: Simplify right side
   1,343.59x = 1,519,061.54
5. Step 5: Solve for x
   x = 1,519,061.54/1,343.59
6. Step 6: Final answer
   x = 1,130.60