Finding the Fourth Proportional to 1,434.50, 1,979.82 and 845.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.50 : 1,979.82 = 845.36 : x
2. Step 2: Convert to fraction form
   1,434.50/1,979.82 = 845.36/x
3. Step 3: Cross multiply
   1,434.50x = 1,979.82 × 845.36
4. Step 4: Simplify right side
   1,434.50x = 1,673,660.64
5. Step 5: Solve for x
   x = 1,673,660.64/1,434.50
6. Step 6: Final answer
   x = 1,166.72