Finding the Fourth Proportional to 1,434.02, 1,978.90 and 844.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.02 : 1,978.90 = 844.59 : x
2. Step 2: Convert to fraction form
   1,434.02/1,978.90 = 844.59/x
3. Step 3: Cross multiply
   1,434.02x = 1,978.90 × 844.59
4. Step 4: Simplify right side
   1,434.02x = 1,671,359.15
5. Step 5: Solve for x
   x = 1,671,359.15/1,434.02
6. Step 6: Final answer
   x = 1,165.51