Finding the Fourth Proportional to 1,496.63, 2,243.40 and 715.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,496.63 : 2,243.40 = 715.28 : x
2. Step 2: Convert to fraction form
   1,496.63/2,243.40 = 715.28/x
3. Step 3: Cross multiply
   1,496.63x = 2,243.40 × 715.28
4. Step 4: Simplify right side
   1,496.63x = 1,604,659.15
5. Step 5: Solve for x
   x = 1,604,659.15/1,496.63
6. Step 6: Final answer
   x = 1,072.18