Finding the Fourth Proportional to 1,342.72, 2,015.76 and 1,336.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.72 : 2,015.76 = 1,336.48 : x
2. Step 2: Convert to fraction form
   1,342.72/2,015.76 = 1,336.48/x
3. Step 3: Cross multiply
   1,342.72x = 2,015.76 × 1,336.48
4. Step 4: Simplify right side
   1,342.72x = 2,694,022.92
5. Step 5: Solve for x
   x = 2,694,022.92/1,342.72
6. Step 6: Final answer
   x = 2,006.39