Finding the Fourth Proportional to 1,434.32, 1,979.46 and 845.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.32 : 1,979.46 = 845.31 : x
2. Step 2: Convert to fraction form
   1,434.32/1,979.46 = 845.31/x
3. Step 3: Cross multiply
   1,434.32x = 1,979.46 × 845.31
4. Step 4: Simplify right side
   1,434.32x = 1,673,257.33
5. Step 5: Solve for x
   x = 1,673,257.33/1,434.32
6. Step 6: Final answer
   x = 1,166.59