Finding the Fourth Proportional to 3,820.59, 5,272.35 and 2,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.59 : 5,272.35 = 2,142.06 : x
2. Step 2: Convert to fraction form
   3,820.59/5,272.35 = 2,142.06/x
3. Step 3: Cross multiply
   3,820.59x = 5,272.35 × 2,142.06
4. Step 4: Simplify right side
   3,820.59x = 11,293,690.04
5. Step 5: Solve for x
   x = 11,293,690.04/3,820.59
6. Step 6: Final answer
   x = 2,956.01