Finding the Fourth Proportional to 1,164.33, 1,607.18 and 722.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.33 : 1,607.18 = 722.61 : x
2. Step 2: Convert to fraction form
   1,164.33/1,607.18 = 722.61/x
3. Step 3: Cross multiply
   1,164.33x = 1,607.18 × 722.61
4. Step 4: Simplify right side
   1,164.33x = 1,161,360.73
5. Step 5: Solve for x
   x = 1,161,360.73/1,164.33
6. Step 6: Final answer
   x = 997.45