Finding the Fourth Proportional to 3,061.15, 4,591.49 and 980.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.15 : 4,591.49 = 980.60 : x
2. Step 2: Convert to fraction form
   3,061.15/4,591.49 = 980.60/x
3. Step 3: Cross multiply
   3,061.15x = 4,591.49 × 980.60
4. Step 4: Simplify right side
   3,061.15x = 4,502,409.83
5. Step 5: Solve for x
   x = 4,502,409.83/3,061.15
6. Step 6: Final answer
   x = 1,470.82