Finding the Fourth Proportional to 1,906.10, 2,860.13 and 1,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.10 : 2,860.13 = 1,443.72 : x
2. Step 2: Convert to fraction form
   1,906.10/2,860.13 = 1,443.72/x
3. Step 3: Cross multiply
   1,906.10x = 2,860.13 × 1,443.72
4. Step 4: Simplify right side
   1,906.10x = 4,129,233.10
5. Step 5: Solve for x
   x = 4,129,233.10/1,906.10
6. Step 6: Final answer
   x = 2,166.33