Finding the Fourth Proportional to 1,408.34, 1,943.52 and 819.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.34 : 1,943.52 = 819.02 : x
2. Step 2: Convert to fraction form
   1,408.34/1,943.52 = 819.02/x
3. Step 3: Cross multiply
   1,408.34x = 1,943.52 × 819.02
4. Step 4: Simplify right side
   1,408.34x = 1,591,781.75
5. Step 5: Solve for x
   x = 1,591,781.75/1,408.34
6. Step 6: Final answer
   x = 1,130.25