Finding the Fourth Proportional to 1,891.54, 2,604.51 and 1,443.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.54 : 2,604.51 = 1,443.81 : x
2. Step 2: Convert to fraction form
   1,891.54/2,604.51 = 1,443.81/x
3. Step 3: Cross multiply
   1,891.54x = 2,604.51 × 1,443.81
4. Step 4: Simplify right side
   1,891.54x = 3,760,417.58
5. Step 5: Solve for x
   x = 3,760,417.58/1,891.54
6. Step 6: Final answer
   x = 1,988.02