Finding the Fourth Proportional to 1,287.53, 1,776.37 and 727.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287.53 : 1,776.37 = 727.94 : x
2. Step 2: Convert to fraction form
   1,287.53/1,776.37 = 727.94/x
3. Step 3: Cross multiply
   1,287.53x = 1,776.37 × 727.94
4. Step 4: Simplify right side
   1,287.53x = 1,293,088.96
5. Step 5: Solve for x
   x = 1,293,088.96/1,287.53
6. Step 6: Final answer
   x = 1,004.32