Finding the Fourth Proportional to 1,158.30, 1,598.27 and 716.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.30 : 1,598.27 = 716.18 : x
2. Step 2: Convert to fraction form
   1,158.30/1,598.27 = 716.18/x
3. Step 3: Cross multiply
   1,158.30x = 1,598.27 × 716.18
4. Step 4: Simplify right side
   1,158.30x = 1,144,637.44
5. Step 5: Solve for x
   x = 1,144,637.44/1,158.30
6. Step 6: Final answer
   x = 988.20