Finding the Fourth Proportional to 3,342.72, 5,017.32 and 1,612.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,342.72 : 5,017.32 = 1,612.56 : x
2. Step 2: Convert to fraction form
   3,342.72/5,017.32 = 1,612.56/x
3. Step 3: Cross multiply
   3,342.72x = 5,017.32 × 1,612.56
4. Step 4: Simplify right side
   3,342.72x = 8,090,729.54
5. Step 5: Solve for x
   x = 8,090,729.54/3,342.72
6. Step 6: Final answer
   x = 2,420.40