Finding the Fourth Proportional to 3,315.28, 4,973.04 and 1,006.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,315.28 : 4,973.04 = 1,006.72 : x
2. Step 2: Convert to fraction form
   3,315.28/4,973.04 = 1,006.72/x
3. Step 3: Cross multiply
   3,315.28x = 4,973.04 × 1,006.72
4. Step 4: Simplify right side
   3,315.28x = 5,006,458.83
5. Step 5: Solve for x
   x = 5,006,458.83/3,315.28
6. Step 6: Final answer
   x = 1,510.12