Finding the Fourth Proportional to 1,443.89, 1,992.49 and 846.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.89 : 1,992.49 = 846.43 : x
2. Step 2: Convert to fraction form
   1,443.89/1,992.49 = 846.43/x
3. Step 3: Cross multiply
   1,443.89x = 1,992.49 × 846.43
4. Step 4: Simplify right side
   1,443.89x = 1,686,496.21
5. Step 5: Solve for x
   x = 1,686,496.21/1,443.89
6. Step 6: Final answer
   x = 1,168.02