Finding the Fourth Proportional to 3,577.30, 5,365.59 and 980.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,577.30 : 5,365.59 = 980.62 : x
2. Step 2: Convert to fraction form
   3,577.30/5,365.59 = 980.62/x
3. Step 3: Cross multiply
   3,577.30x = 5,365.59 × 980.62
4. Step 4: Simplify right side
   3,577.30x = 5,261,604.87
5. Step 5: Solve for x
   x = 5,261,604.87/3,577.30
6. Step 6: Final answer
   x = 1,470.83