Finding the Fourth Proportional to 3,928.57, 5,892.89 and 1,006.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.57 : 5,892.89 = 1,006.79 : x
2. Step 2: Convert to fraction form
   3,928.57/5,892.89 = 1,006.79/x
3. Step 3: Cross multiply
   3,928.57x = 5,892.89 × 1,006.79
4. Step 4: Simplify right side
   3,928.57x = 5,932,868.22
5. Step 5: Solve for x
   x = 5,932,868.22/3,928.57
6. Step 6: Final answer
   x = 1,510.19