Finding the Fourth Proportional to 3,445.89, 5,168.81 and 980.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,445.89 : 5,168.81 = 980.71 : x
2. Step 2: Convert to fraction form
   3,445.89/5,168.81 = 980.71/x
3. Step 3: Cross multiply
   3,445.89x = 5,168.81 × 980.71
4. Step 4: Simplify right side
   3,445.89x = 5,069,093.18
5. Step 5: Solve for x
   x = 5,069,093.18/3,445.89
6. Step 6: Final answer
   x = 1,471.05