Finding the Fourth Proportional to 1,165.16, 1,607.82 and 723.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165.16 : 1,607.82 = 723.18 : x
2. Step 2: Convert to fraction form
   1,165.16/1,607.82 = 723.18/x
3. Step 3: Cross multiply
   1,165.16x = 1,607.82 × 723.18
4. Step 4: Simplify right side
   1,165.16x = 1,162,743.27
5. Step 5: Solve for x
   x = 1,162,743.27/1,165.16
6. Step 6: Final answer
   x = 997.93