Finding the Fourth Proportional to 1,429.65, 1,973.03 and 800.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.65 : 1,973.03 = 800.31 : x
2. Step 2: Convert to fraction form
   1,429.65/1,973.03 = 800.31/x
3. Step 3: Cross multiply
   1,429.65x = 1,973.03 × 800.31
4. Step 4: Simplify right side
   1,429.65x = 1,579,029.14
5. Step 5: Solve for x
   x = 1,579,029.14/1,429.65
6. Step 6: Final answer
   x = 1,104.49