Finding the Fourth Proportional to 1,919.45, 2,645.37 and 1,444.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.45 : 2,645.37 = 1,444.12 : x
2. Step 2: Convert to fraction form
   1,919.45/2,645.37 = 1,444.12/x
3. Step 3: Cross multiply
   1,919.45x = 2,645.37 × 1,444.12
4. Step 4: Simplify right side
   1,919.45x = 3,820,235.33
5. Step 5: Solve for x
   x = 3,820,235.33/1,919.45
6. Step 6: Final answer
   x = 1,990.27