Finding the Fourth Proportional to 3,445.37, 5,168.12 and 980.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,445.37 : 5,168.12 = 980.20 : x
2. Step 2: Convert to fraction form
   3,445.37/5,168.12 = 980.20/x
3. Step 3: Cross multiply
   3,445.37x = 5,168.12 × 980.20
4. Step 4: Simplify right side
   3,445.37x = 5,065,791.22
5. Step 5: Solve for x
   x = 5,065,791.22/3,445.37
6. Step 6: Final answer
   x = 1,470.32