Finding the Fourth Proportional to 1,983.40, 2,973.60 and 1,010.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.40 : 2,973.60 = 1,010.20 : x
2. Step 2: Convert to fraction form
   1,983.40/2,973.60 = 1,010.20/x
3. Step 3: Cross multiply
   1,983.40x = 2,973.60 × 1,010.20
4. Step 4: Simplify right side
   1,983.40x = 3,003,930.72
5. Step 5: Solve for x
   x = 3,003,930.72/1,983.40
6. Step 6: Final answer
   x = 1,514.54