Finding the Fourth Proportional to 2,664.17, 3,996.60 and 1,429.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.17 : 3,996.60 = 1,429.89 : x
2. Step 2: Convert to fraction form
   2,664.17/3,996.60 = 1,429.89/x
3. Step 3: Cross multiply
   2,664.17x = 3,996.60 × 1,429.89
4. Step 4: Simplify right side
   2,664.17x = 5,714,698.37
5. Step 5: Solve for x
   x = 5,714,698.37/2,664.17
6. Step 6: Final answer
   x = 2,145.02