Finding the Fourth Proportional to 1,344.42, 1,854.72 and 819.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.42 : 1,854.72 = 819.54 : x
2. Step 2: Convert to fraction form
   1,344.42/1,854.72 = 819.54/x
3. Step 3: Cross multiply
   1,344.42x = 1,854.72 × 819.54
4. Step 4: Simplify right side
   1,344.42x = 1,520,017.23
5. Step 5: Solve for x
   x = 1,520,017.23/1,344.42
6. Step 6: Final answer
   x = 1,130.61