Finding the Fourth Proportional to 1,158.42, 1,597.38 and 980.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.42 : 1,597.38 = 980.70 : x
2. Step 2: Convert to fraction form
   1,158.42/1,597.38 = 980.70/x
3. Step 3: Cross multiply
   1,158.42x = 1,597.38 × 980.70
4. Step 4: Simplify right side
   1,158.42x = 1,566,550.57
5. Step 5: Solve for x
   x = 1,566,550.57/1,158.42
6. Step 6: Final answer
   x = 1,352.32