Finding the Fourth Proportional to 1,443.98, 1,979.70 and 1,417.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.98 : 1,979.70 = 1,417.72 : x
2. Step 2: Convert to fraction form
   1,443.98/1,979.70 = 1,417.72/x
3. Step 3: Cross multiply
   1,443.98x = 1,979.70 × 1,417.72
4. Step 4: Simplify right side
   1,443.98x = 2,806,660.28
5. Step 5: Solve for x
   x = 2,806,660.28/1,443.98
6. Step 6: Final answer
   x = 1,943.70