Finding the Fourth Proportional to 3,721.55, 5,135.40 and 2,042.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.55 : 5,135.40 = 2,042.82 : x
2. Step 2: Convert to fraction form
   3,721.55/5,135.40 = 2,042.82/x
3. Step 3: Cross multiply
   3,721.55x = 5,135.40 × 2,042.82
4. Step 4: Simplify right side
   3,721.55x = 10,490,697.83
5. Step 5: Solve for x
   x = 10,490,697.83/3,721.55
6. Step 6: Final answer
   x = 2,818.91