Finding the Fourth Proportional to 1,982.80, 2,973.12 and 1,009.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,982.80 : 2,973.12 = 1,009.72 : x
2. Step 2: Convert to fraction form
   1,982.80/2,973.12 = 1,009.72/x
3. Step 3: Cross multiply
   1,982.80x = 2,973.12 × 1,009.72
4. Step 4: Simplify right side
   1,982.80x = 3,002,018.73
5. Step 5: Solve for x
   x = 3,002,018.73/1,982.80
6. Step 6: Final answer
   x = 1,514.03