Finding the Fourth Proportional to 3,615.72, 4,990.35 and 2,043.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.72 : 4,990.35 = 2,043.81 : x
2. Step 2: Convert to fraction form
   3,615.72/4,990.35 = 2,043.81/x
3. Step 3: Cross multiply
   3,615.72x = 4,990.35 × 2,043.81
4. Step 4: Simplify right side
   3,615.72x = 10,199,327.23
5. Step 5: Solve for x
   x = 10,199,327.23/3,615.72
6. Step 6: Final answer
   x = 2,820.83