Finding the Fourth Proportional to 3,061.10, 4,590.23 and 980.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.10 : 4,590.23 = 980.64 : x
2. Step 2: Convert to fraction form
   3,061.10/4,590.23 = 980.64/x
3. Step 3: Cross multiply
   3,061.10x = 4,590.23 × 980.64
4. Step 4: Simplify right side
   3,061.10x = 4,501,365.60
5. Step 5: Solve for x
   x = 4,501,365.60/3,061.10
6. Step 6: Final answer
   x = 1,470.50