Finding the Fourth Proportional to 1,429.75, 1,973.09 and 800.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.75 : 1,973.09 = 800.30 : x
2. Step 2: Convert to fraction form
   1,429.75/1,973.09 = 800.30/x
3. Step 3: Cross multiply
   1,429.75x = 1,973.09 × 800.30
4. Step 4: Simplify right side
   1,429.75x = 1,579,063.93
5. Step 5: Solve for x
   x = 1,579,063.93/1,429.75
6. Step 6: Final answer
   x = 1,104.43