Finding the Fourth Proportional to 1,434.67, 1,978.77 and 844.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.67 : 1,978.77 = 844.72 : x
2. Step 2: Convert to fraction form
   1,434.67/1,978.77 = 844.72/x
3. Step 3: Cross multiply
   1,434.67x = 1,978.77 × 844.72
4. Step 4: Simplify right side
   1,434.67x = 1,671,506.59
5. Step 5: Solve for x
   x = 1,671,506.59/1,434.67
6. Step 6: Final answer
   x = 1,165.08