Finding the Fourth Proportional to 1,443.41, 1,990.54 and 946.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.41 : 1,990.54 = 946.48 : x
2. Step 2: Convert to fraction form
   1,443.41/1,990.54 = 946.48/x
3. Step 3: Cross multiply
   1,443.41x = 1,990.54 × 946.48
4. Step 4: Simplify right side
   1,443.41x = 1,884,006.30
5. Step 5: Solve for x
   x = 1,884,006.30/1,443.41
6. Step 6: Final answer
   x = 1,305.25