Finding the Fourth Proportional to 1,483.18, 2,225.15 and 789.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.18 : 2,225.15 = 789.28 : x
2. Step 2: Convert to fraction form
   1,483.18/2,225.15 = 789.28/x
3. Step 3: Cross multiply
   1,483.18x = 2,225.15 × 789.28
4. Step 4: Simplify right side
   1,483.18x = 1,756,262.80
5. Step 5: Solve for x
   x = 1,756,262.80/1,483.18
6. Step 6: Final answer
   x = 1,184.12