Finding the Fourth Proportional to 1,429.24, 1,972.32 and 799.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.24 : 1,972.32 = 799.80 : x
2. Step 2: Convert to fraction form
   1,429.24/1,972.32 = 799.80/x
3. Step 3: Cross multiply
   1,429.24x = 1,972.32 × 799.80
4. Step 4: Simplify right side
   1,429.24x = 1,577,461.54
5. Step 5: Solve for x
   x = 1,577,461.54/1,429.24
6. Step 6: Final answer
   x = 1,103.71