Finding the Fourth Proportional to 1,429.15, 1,972.17 and 799.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.15 : 1,972.17 = 799.63 : x
2. Step 2: Convert to fraction form
   1,429.15/1,972.17 = 799.63/x
3. Step 3: Cross multiply
   1,429.15x = 1,972.17 × 799.63
4. Step 4: Simplify right side
   1,429.15x = 1,577,006.30
5. Step 5: Solve for x
   x = 1,577,006.30/1,429.15
6. Step 6: Final answer
   x = 1,103.46