Finding the Fourth Proportional to 3,820.83, 5,272.56 and 2,142.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.83 : 5,272.56 = 2,142.42 : x
2. Step 2: Convert to fraction form
   3,820.83/5,272.56 = 2,142.42/x
3. Step 3: Cross multiply
   3,820.83x = 5,272.56 × 2,142.42
4. Step 4: Simplify right side
   3,820.83x = 11,296,038.00
5. Step 5: Solve for x
   x = 11,296,038.00/3,820.83
6. Step 6: Final answer
   x = 2,956.44