Finding the Fourth Proportional to 1,165.33, 1,608.56 and 723.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165.33 : 1,608.56 = 723.61 : x
2. Step 2: Convert to fraction form
   1,165.33/1,608.56 = 723.61/x
3. Step 3: Cross multiply
   1,165.33x = 1,608.56 × 723.61
4. Step 4: Simplify right side
   1,165.33x = 1,163,970.10
5. Step 5: Solve for x
   x = 1,163,970.10/1,165.33
6. Step 6: Final answer
   x = 998.83