Finding the Fourth Proportional to 2,443.78, 3,374.09 and 1,560.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.78 : 3,374.09 = 1,560.78 : x
2. Step 2: Convert to fraction form
   2,443.78/3,374.09 = 1,560.78/x
3. Step 3: Cross multiply
   2,443.78x = 3,374.09 × 1,560.78
4. Step 4: Simplify right side
   2,443.78x = 5,266,204.39
5. Step 5: Solve for x
   x = 5,266,204.39/2,443.78
6. Step 6: Final answer
   x = 2,154.94