Finding the Fourth Proportional to 3,061.70, 4,590.30 and 980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.70 : 4,590.30 = 980.50 : x
2. Step 2: Convert to fraction form
   3,061.70/4,590.30 = 980.50/x
3. Step 3: Cross multiply
   3,061.70x = 4,590.30 × 980.50
4. Step 4: Simplify right side
   3,061.70x = 4,500,789.15
5. Step 5: Solve for x
   x = 4,500,789.15/3,061.70
6. Step 6: Final answer
   x = 1,470.03