Finding the Fourth Proportional to 1,316.59, 1,817.01 and 727.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.59 : 1,817.01 = 727.31 : x
2. Step 2: Convert to fraction form
   1,316.59/1,817.01 = 727.31/x
3. Step 3: Cross multiply
   1,316.59x = 1,817.01 × 727.31
4. Step 4: Simplify right side
   1,316.59x = 1,321,534.09
5. Step 5: Solve for x
   x = 1,321,534.09/1,316.59
6. Step 6: Final answer
   x = 1,003.76