Finding the Fourth Proportional to 1,304.71, 1,800.56 and 715.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,304.71 : 1,800.56 = 715.23 : x
2. Step 2: Convert to fraction form
   1,304.71/1,800.56 = 715.23/x
3. Step 3: Cross multiply
   1,304.71x = 1,800.56 × 715.23
4. Step 4: Simplify right side
   1,304.71x = 1,287,816.32
5. Step 5: Solve for x
   x = 1,287,816.32/1,304.71
6. Step 6: Final answer
   x = 987.05