Finding the Fourth Proportional to 2,818.86, 3,885.90 and 1,977.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.86 : 3,885.90 = 1,977.03 : x
2. Step 2: Convert to fraction form
   2,818.86/3,885.90 = 1,977.03/x
3. Step 3: Cross multiply
   2,818.86x = 3,885.90 × 1,977.03
4. Step 4: Simplify right side
   2,818.86x = 7,682,540.88
5. Step 5: Solve for x
   x = 7,682,540.88/2,818.86
6. Step 6: Final answer
   x = 2,725.41