Finding the Fourth Proportional to 1,434.81, 1,979.79 and 845.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.81 : 1,979.79 = 845.46 : x
2. Step 2: Convert to fraction form
   1,434.81/1,979.79 = 845.46/x
3. Step 3: Cross multiply
   1,434.81x = 1,979.79 × 845.46
4. Step 4: Simplify right side
   1,434.81x = 1,673,833.25
5. Step 5: Solve for x
   x = 1,673,833.25/1,434.81
6. Step 6: Final answer
   x = 1,166.59