Finding the Fourth Proportional to 1,433.50, 1,978.23 and 844.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.50 : 1,978.23 = 844.40 : x
2. Step 2: Convert to fraction form
   1,433.50/1,978.23 = 844.40/x
3. Step 3: Cross multiply
   1,433.50x = 1,978.23 × 844.40
4. Step 4: Simplify right side
   1,433.50x = 1,670,417.41
5. Step 5: Solve for x
   x = 1,670,417.41/1,433.50
6. Step 6: Final answer
   x = 1,165.27