Finding the Fourth Proportional to 1,434.62, 1,979.78 and 845.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.62 : 1,979.78 = 845.34 : x
2. Step 2: Convert to fraction form
   1,434.62/1,979.78 = 845.34/x
3. Step 3: Cross multiply
   1,434.62x = 1,979.78 × 845.34
4. Step 4: Simplify right side
   1,434.62x = 1,673,583.00
5. Step 5: Solve for x
   x = 1,673,583.00/1,434.62
6. Step 6: Final answer
   x = 1,166.57