Finding the Fourth Proportional to 1,434.55, 1,978.95 and 844.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.55 : 1,978.95 = 844.48 : x
2. Step 2: Convert to fraction form
   1,434.55/1,978.95 = 844.48/x
3. Step 3: Cross multiply
   1,434.55x = 1,978.95 × 844.48
4. Step 4: Simplify right side
   1,434.55x = 1,671,183.70
5. Step 5: Solve for x
   x = 1,671,183.70/1,434.55
6. Step 6: Final answer
   x = 1,164.95