Finding the Fourth Proportional to 1,164.78, 1,606.82 and 716.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.78 : 1,606.82 = 716.22 : x
2. Step 2: Convert to fraction form
   1,164.78/1,606.82 = 716.22/x
3. Step 3: Cross multiply
   1,164.78x = 1,606.82 × 716.22
4. Step 4: Simplify right side
   1,164.78x = 1,150,833.04
5. Step 5: Solve for x
   x = 1,150,833.04/1,164.78
6. Step 6: Final answer
   x = 988.03