Finding the Fourth Proportional to 1,623.43, 2,434.83 and 800.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.43 : 2,434.83 = 800.83 : x
2. Step 2: Convert to fraction form
   1,623.43/2,434.83 = 800.83/x
3. Step 3: Cross multiply
   1,623.43x = 2,434.83 × 800.83
4. Step 4: Simplify right side
   1,623.43x = 1,949,884.91
5. Step 5: Solve for x
   x = 1,949,884.91/1,623.43
6. Step 6: Final answer
   x = 1,201.09