Finding the Fourth Proportional to 1,433.92, 1,979.01 and 836.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.92 : 1,979.01 = 836.61 : x
2. Step 2: Convert to fraction form
   1,433.92/1,979.01 = 836.61/x
3. Step 3: Cross multiply
   1,433.92x = 1,979.01 × 836.61
4. Step 4: Simplify right side
   1,433.92x = 1,655,645.48
5. Step 5: Solve for x
   x = 1,655,645.48/1,433.92
6. Step 6: Final answer
   x = 1,154.63