Finding the Fourth Proportional to 1,429.25, 1,972.37 and 808.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.25 : 1,972.37 = 808.37 : x
2. Step 2: Convert to fraction form
   1,429.25/1,972.37 = 808.37/x
3. Step 3: Cross multiply
   1,429.25x = 1,972.37 × 808.37
4. Step 4: Simplify right side
   1,429.25x = 1,594,404.74
5. Step 5: Solve for x
   x = 1,594,404.74/1,429.25
6. Step 6: Final answer
   x = 1,115.55