Finding the Fourth Proportional to 3,720.86, 5,134.56 and 2,042.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720.86 : 5,134.56 = 2,042.18 : x
2. Step 2: Convert to fraction form
   3,720.86/5,134.56 = 2,042.18/x
3. Step 3: Cross multiply
   3,720.86x = 5,134.56 × 2,042.18
4. Step 4: Simplify right side
   3,720.86x = 10,485,695.74
5. Step 5: Solve for x
   x = 10,485,695.74/3,720.86
6. Step 6: Final answer
   x = 2,818.08