Finding the Fourth Proportional to 3,085.83, 4,254.72 and 2,142.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.83 : 4,254.72 = 2,142.42 : x
2. Step 2: Convert to fraction form
   3,085.83/4,254.72 = 2,142.42/x
3. Step 3: Cross multiply
   3,085.83x = 4,254.72 × 2,142.42
4. Step 4: Simplify right side
   3,085.83x = 9,115,397.22
5. Step 5: Solve for x
   x = 9,115,397.22/3,085.83
6. Step 6: Final answer
   x = 2,953.95