Finding the Fourth Proportional to 3,753.54, 5,630.56 and 980.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,753.54 : 5,630.56 = 980.30 : x
2. Step 2: Convert to fraction form
   3,753.54/5,630.56 = 980.30/x
3. Step 3: Cross multiply
   3,753.54x = 5,630.56 × 980.30
4. Step 4: Simplify right side
   3,753.54x = 5,519,604.91
5. Step 5: Solve for x
   x = 5,519,604.91/3,753.54
6. Step 6: Final answer
   x = 1,470.51