Finding the Fourth Proportional to 1,429.69, 1,973.24 and 808.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.69 : 1,973.24 = 808.69 : x
2. Step 2: Convert to fraction form
   1,429.69/1,973.24 = 808.69/x
3. Step 3: Cross multiply
   1,429.69x = 1,973.24 × 808.69
4. Step 4: Simplify right side
   1,429.69x = 1,595,739.46
5. Step 5: Solve for x
   x = 1,595,739.46/1,429.69
6. Step 6: Final answer
   x = 1,116.14