Finding the Fourth Proportional to 2,010.47, 3,015.69 and 1,321.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.47 : 3,015.69 = 1,321.49 : x
2. Step 2: Convert to fraction form
   2,010.47/3,015.69 = 1,321.49/x
3. Step 3: Cross multiply
   2,010.47x = 3,015.69 × 1,321.49
4. Step 4: Simplify right side
   2,010.47x = 3,985,189.10
5. Step 5: Solve for x
   x = 3,985,189.10/2,010.47
6. Step 6: Final answer
   x = 1,982.22