Finding the Fourth Proportional to 2,106.24, 2,905.56 and 1,443.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.24 : 2,905.56 = 1,443.12 : x
2. Step 2: Convert to fraction form
   2,106.24/2,905.56 = 1,443.12/x
3. Step 3: Cross multiply
   2,106.24x = 2,905.56 × 1,443.12
4. Step 4: Simplify right side
   2,106.24x = 4,193,071.75
5. Step 5: Solve for x
   x = 4,193,071.75/2,106.24
6. Step 6: Final answer
   x = 1,990.79