Finding the Fourth Proportional to 1,443.80, 1,992.47 and 846.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.80 : 1,992.47 = 846.65 : x
2. Step 2: Convert to fraction form
   1,443.80/1,992.47 = 846.65/x
3. Step 3: Cross multiply
   1,443.80x = 1,992.47 × 846.65
4. Step 4: Simplify right side
   1,443.80x = 1,686,910.53
5. Step 5: Solve for x
   x = 1,686,910.53/1,443.80
6. Step 6: Final answer
   x = 1,168.39