Finding the Fourth Proportional to 1,433.57, 1,978.43 and 844.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.57 : 1,978.43 = 844.56 : x
2. Step 2: Convert to fraction form
   1,433.57/1,978.43 = 844.56/x
3. Step 3: Cross multiply
   1,433.57x = 1,978.43 × 844.56
4. Step 4: Simplify right side
   1,433.57x = 1,670,898.62
5. Step 5: Solve for x
   x = 1,670,898.62/1,433.57
6. Step 6: Final answer
   x = 1,165.55