Finding the Fourth Proportional to 1,392.72, 1,919.91 and 1,060.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.72 : 1,919.91 = 1,060.56 : x
2. Step 2: Convert to fraction form
   1,392.72/1,919.91 = 1,060.56/x
3. Step 3: Cross multiply
   1,392.72x = 1,919.91 × 1,060.56
4. Step 4: Simplify right side
   1,392.72x = 2,036,179.75
5. Step 5: Solve for x
   x = 2,036,179.75/1,392.72
6. Step 6: Final answer
   x = 1,462.02