Finding the Fourth Proportional to 1,316.89, 1,817.33 and 727.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.89 : 1,817.33 = 727.45 : x
2. Step 2: Convert to fraction form
   1,316.89/1,817.33 = 727.45/x
3. Step 3: Cross multiply
   1,316.89x = 1,817.33 × 727.45
4. Step 4: Simplify right side
   1,316.89x = 1,322,003.98
5. Step 5: Solve for x
   x = 1,322,003.98/1,316.89
6. Step 6: Final answer
   x = 1,003.89