Finding the Fourth Proportional to 2,883.96, 3,977.82 and 2,840.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,883.96 : 3,977.82 = 2,840.76 : x
2. Step 2: Convert to fraction form
   2,883.96/3,977.82 = 2,840.76/x
3. Step 3: Cross multiply
   2,883.96x = 3,977.82 × 2,840.76
4. Step 4: Simplify right side
   2,883.96x = 11,300,031.94
5. Step 5: Solve for x
   x = 11,300,031.94/2,883.96
6. Step 6: Final answer
   x = 3,918.23