Finding the Fourth Proportional to 1,160.62, 1,601.96 and 718.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.62 : 1,601.96 = 718.27 : x
2. Step 2: Convert to fraction form
   1,160.62/1,601.96 = 718.27/x
3. Step 3: Cross multiply
   1,160.62x = 1,601.96 × 718.27
4. Step 4: Simplify right side
   1,160.62x = 1,150,636.22
5. Step 5: Solve for x
   x = 1,150,636.22/1,160.62
6. Step 6: Final answer
   x = 991.40