Finding the Fourth Proportional to 3,061.35, 4,590.85 and 980.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.35 : 4,590.85 = 980.91 : x
2. Step 2: Convert to fraction form
   3,061.35/4,590.85 = 980.91/x
3. Step 3: Cross multiply
   3,061.35x = 4,590.85 × 980.91
4. Step 4: Simplify right side
   3,061.35x = 4,503,210.67
5. Step 5: Solve for x
   x = 4,503,210.67/3,061.35
6. Step 6: Final answer
   x = 1,470.99