Finding the Fourth Proportional to 1,520.01, 2,280.72 and 789.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.01 : 2,280.72 = 789.18 : x
2. Step 2: Convert to fraction form
   1,520.01/2,280.72 = 789.18/x
3. Step 3: Cross multiply
   1,520.01x = 2,280.72 × 789.18
4. Step 4: Simplify right side
   1,520.01x = 1,799,898.61
5. Step 5: Solve for x
   x = 1,799,898.61/1,520.01
6. Step 6: Final answer
   x = 1,184.14