Finding the Fourth Proportional to 1,158.36, 1,598.61 and 716.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.36 : 1,598.61 = 716.02 : x
2. Step 2: Convert to fraction form
   1,158.36/1,598.61 = 716.02/x
3. Step 3: Cross multiply
   1,158.36x = 1,598.61 × 716.02
4. Step 4: Simplify right side
   1,158.36x = 1,144,636.73
5. Step 5: Solve for x
   x = 1,144,636.73/1,158.36
6. Step 6: Final answer
   x = 988.15