Finding the Fourth Proportional to 4,856.28, 7,283.64 and 1,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,856.28 : 7,283.64 = 1,392.72 : x
2. Step 2: Convert to fraction form
   4,856.28/7,283.64 = 1,392.72/x
3. Step 3: Cross multiply
   4,856.28x = 7,283.64 × 1,392.72
4. Step 4: Simplify right side
   4,856.28x = 10,144,071.10
5. Step 5: Solve for x
   x = 10,144,071.10/4,856.28
6. Step 6: Final answer
   x = 2,088.86