Finding the Fourth Proportional to 1,990.43, 2,987.27 and 1,016.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.43 : 2,987.27 = 1,016.81 : x
2. Step 2: Convert to fraction form
   1,990.43/2,987.27 = 1,016.81/x
3. Step 3: Cross multiply
   1,990.43x = 2,987.27 × 1,016.81
4. Step 4: Simplify right side
   1,990.43x = 3,037,486.01
5. Step 5: Solve for x
   x = 3,037,486.01/1,990.43
6. Step 6: Final answer
   x = 1,526.05