Finding the Fourth Proportional to 1,429.18, 1,972.36 and 799.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.18 : 1,972.36 = 799.77 : x
2. Step 2: Convert to fraction form
   1,429.18/1,972.36 = 799.77/x
3. Step 3: Cross multiply
   1,429.18x = 1,972.36 × 799.77
4. Step 4: Simplify right side
   1,429.18x = 1,577,443.88
5. Step 5: Solve for x
   x = 1,577,443.88/1,429.18
6. Step 6: Final answer
   x = 1,103.74