Finding the Fourth Proportional to 3,577.68, 5,366.46 and 980.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,577.68 : 5,366.46 = 980.62 : x
2. Step 2: Convert to fraction form
   3,577.68/5,366.46 = 980.62/x
3. Step 3: Cross multiply
   3,577.68x = 5,366.46 × 980.62
4. Step 4: Simplify right side
   3,577.68x = 5,262,426.27
5. Step 5: Solve for x
   x = 5,262,426.27/3,577.68
6. Step 6: Final answer
   x = 1,470.91