Finding the Fourth Proportional to 1,160.49, 1,601.46 and 718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.49 : 1,601.46 = 718.50 : x
2. Step 2: Convert to fraction form
   1,160.49/1,601.46 = 718.50/x
3. Step 3: Cross multiply
   1,160.49x = 1,601.46 × 718.50
4. Step 4: Simplify right side
   1,160.49x = 1,150,649.01
5. Step 5: Solve for x
   x = 1,150,649.01/1,160.49
6. Step 6: Final answer
   x = 991.52