Finding the Fourth Proportional to 1,434.34, 1,979.72 and 936.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.34 : 1,979.72 = 936.10 : x
2. Step 2: Convert to fraction form
   1,434.34/1,979.72 = 936.10/x
3. Step 3: Cross multiply
   1,434.34x = 1,979.72 × 936.10
4. Step 4: Simplify right side
   1,434.34x = 1,853,215.89
5. Step 5: Solve for x
   x = 1,853,215.89/1,434.34
6. Step 6: Final answer
   x = 1,292.03