Finding the Fourth Proportional to 1,316.52, 1,816.74 and 727.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.52 : 1,816.74 = 727.05 : x
2. Step 2: Convert to fraction form
   1,316.52/1,816.74 = 727.05/x
3. Step 3: Cross multiply
   1,316.52x = 1,816.74 × 727.05
4. Step 4: Simplify right side
   1,316.52x = 1,320,860.82
5. Step 5: Solve for x
   x = 1,320,860.82/1,316.52
6. Step 6: Final answer
   x = 1,003.30