Finding the Fourth Proportional to 1,433.87, 1,978.73 and 844.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.87 : 1,978.73 = 844.39 : x
2. Step 2: Convert to fraction form
   1,433.87/1,978.73 = 844.39/x
3. Step 3: Cross multiply
   1,433.87x = 1,978.73 × 844.39
4. Step 4: Simplify right side
   1,433.87x = 1,670,821.24
5. Step 5: Solve for x
   x = 1,670,821.24/1,433.87
6. Step 6: Final answer
   x = 1,165.25