Finding the Fourth Proportional to 1,434.36, 1,978.92 and 844.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.36 : 1,978.92 = 844.77 : x
2. Step 2: Convert to fraction form
   1,434.36/1,978.92 = 844.77/x
3. Step 3: Cross multiply
   1,434.36x = 1,978.92 × 844.77
4. Step 4: Simplify right side
   1,434.36x = 1,671,732.25
5. Step 5: Solve for x
   x = 1,671,732.25/1,434.36
6. Step 6: Final answer
   x = 1,165.49