Finding the Fourth Proportional to 2,231.01, 3,078.81 and 1,445.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.01 : 3,078.81 = 1,445.06 : x
2. Step 2: Convert to fraction form
   2,231.01/3,078.81 = 1,445.06/x
3. Step 3: Cross multiply
   2,231.01x = 3,078.81 × 1,445.06
4. Step 4: Simplify right side
   2,231.01x = 4,449,072.88
5. Step 5: Solve for x
   x = 4,449,072.88/2,231.01
6. Step 6: Final answer
   x = 1,994.20