Finding the Fourth Proportional to 1,434.25, 1,979.31 and 845.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.25 : 1,979.31 = 845.29 : x
2. Step 2: Convert to fraction form
   1,434.25/1,979.31 = 845.29/x
3. Step 3: Cross multiply
   1,434.25x = 1,979.31 × 845.29
4. Step 4: Simplify right side
   1,434.25x = 1,673,090.95
5. Step 5: Solve for x
   x = 1,673,090.95/1,434.25
6. Step 6: Final answer
   x = 1,166.53