Finding the Fourth Proportional to 1,433.88, 1,978.75 and 844.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.88 : 1,978.75 = 844.77 : x
2. Step 2: Convert to fraction form
   1,433.88/1,978.75 = 844.77/x
3. Step 3: Cross multiply
   1,433.88x = 1,978.75 × 844.77
4. Step 4: Simplify right side
   1,433.88x = 1,671,588.64
5. Step 5: Solve for x
   x = 1,671,588.64/1,433.88
6. Step 6: Final answer
   x = 1,165.78