Finding the Fourth Proportional to 1,429.06, 1,972.20 and 799.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.06 : 1,972.20 = 799.65 : x
2. Step 2: Convert to fraction form
   1,429.06/1,972.20 = 799.65/x
3. Step 3: Cross multiply
   1,429.06x = 1,972.20 × 799.65
4. Step 4: Simplify right side
   1,429.06x = 1,577,059.87
5. Step 5: Solve for x
   x = 1,577,059.87/1,429.06
6. Step 6: Final answer
   x = 1,103.56