Finding the Fourth Proportional to 2,442.72, 3,661.29 and 981.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.72 : 3,661.29 = 981.12 : x
2. Step 2: Convert to fraction form
   2,442.72/3,661.29 = 981.12/x
3. Step 3: Cross multiply
   2,442.72x = 3,661.29 × 981.12
4. Step 4: Simplify right side
   2,442.72x = 3,592,164.84
5. Step 5: Solve for x
   x = 3,592,164.84/2,442.72
6. Step 6: Final answer
   x = 1,470.56