Finding the Fourth Proportional to 1,342.87, 1,853.49 and 819.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.87 : 1,853.49 = 819.34 : x
2. Step 2: Convert to fraction form
   1,342.87/1,853.49 = 819.34/x
3. Step 3: Cross multiply
   1,342.87x = 1,853.49 × 819.34
4. Step 4: Simplify right side
   1,342.87x = 1,518,638.50
5. Step 5: Solve for x
   x = 1,518,638.50/1,342.87
6. Step 6: Final answer
   x = 1,130.89