Finding the Fourth Proportional to 1,443.93, 1,991.64 and 946.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.93 : 1,991.64 = 946.98 : x
2. Step 2: Convert to fraction form
   1,443.93/1,991.64 = 946.98/x
3. Step 3: Cross multiply
   1,443.93x = 1,991.64 × 946.98
4. Step 4: Simplify right side
   1,443.93x = 1,886,043.25
5. Step 5: Solve for x
   x = 1,886,043.25/1,443.93
6. Step 6: Final answer
   x = 1,306.19