Finding the Fourth Proportional to 1,429.62, 1,972.41 and 800.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.62 : 1,972.41 = 800.05 : x
2. Step 2: Convert to fraction form
   1,429.62/1,972.41 = 800.05/x
3. Step 3: Cross multiply
   1,429.62x = 1,972.41 × 800.05
4. Step 4: Simplify right side
   1,429.62x = 1,578,026.62
5. Step 5: Solve for x
   x = 1,578,026.62/1,429.62
6. Step 6: Final answer
   x = 1,103.81