Finding the Fourth Proportional to 3,445.71, 5,167.79 and 980.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,445.71 : 5,167.79 = 980.48 : x
2. Step 2: Convert to fraction form
   3,445.71/5,167.79 = 980.48/x
3. Step 3: Cross multiply
   3,445.71x = 5,167.79 × 980.48
4. Step 4: Simplify right side
   3,445.71x = 5,066,888.90
5. Step 5: Solve for x
   x = 5,066,888.90/3,445.71
6. Step 6: Final answer
   x = 1,470.49