Finding the Fourth Proportional to 1,990.21, 2,983.06 and 1,014.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.21 : 2,983.06 = 1,014.25 : x
2. Step 2: Convert to fraction form
   1,990.21/2,983.06 = 1,014.25/x
3. Step 3: Cross multiply
   1,990.21x = 2,983.06 × 1,014.25
4. Step 4: Simplify right side
   1,990.21x = 3,025,568.61
5. Step 5: Solve for x
   x = 3,025,568.61/1,990.21
6. Step 6: Final answer
   x = 1,520.23