Finding the Fourth Proportional to 1,560.12, 2,338.02 and 789.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.12 : 2,338.02 = 789.72 : x
2. Step 2: Convert to fraction form
   1,560.12/2,338.02 = 789.72/x
3. Step 3: Cross multiply
   1,560.12x = 2,338.02 × 789.72
4. Step 4: Simplify right side
   1,560.12x = 1,846,381.15
5. Step 5: Solve for x
   x = 1,846,381.15/1,560.12
6. Step 6: Final answer
   x = 1,183.49