Finding the Fourth Proportional to 1,408.84, 1,944.32 and 819.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.84 : 1,944.32 = 819.34 : x
2. Step 2: Convert to fraction form
   1,408.84/1,944.32 = 819.34/x
3. Step 3: Cross multiply
   1,408.84x = 1,944.32 × 819.34
4. Step 4: Simplify right side
   1,408.84x = 1,593,059.15
5. Step 5: Solve for x
   x = 1,593,059.15/1,408.84
6. Step 6: Final answer
   x = 1,130.76