Finding the Fourth Proportional to 1,689.32, 2,333.98 and 1,443.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.32 : 2,333.98 = 1,443.24 : x
2. Step 2: Convert to fraction form
   1,689.32/2,333.98 = 1,443.24/x
3. Step 3: Cross multiply
   1,689.32x = 2,333.98 × 1,443.24
4. Step 4: Simplify right side
   1,689.32x = 3,368,493.30
5. Step 5: Solve for x
   x = 3,368,493.30/1,689.32
6. Step 6: Final answer
   x = 1,993.99