Finding the Fourth Proportional to 1,429.63, 1,972.75 and 800.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.63 : 1,972.75 = 800.12 : x
2. Step 2: Convert to fraction form
   1,429.63/1,972.75 = 800.12/x
3. Step 3: Cross multiply
   1,429.63x = 1,972.75 × 800.12
4. Step 4: Simplify right side
   1,429.63x = 1,578,436.73
5. Step 5: Solve for x
   x = 1,578,436.73/1,429.63
6. Step 6: Final answer
   x = 1,104.09