Finding the Fourth Proportional to 3,123.83, 4,671.96 and 2,779.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.83 : 4,671.96 = 2,779.58 : x
2. Step 2: Convert to fraction form
   3,123.83/4,671.96 = 2,779.58/x
3. Step 3: Cross multiply
   3,123.83x = 4,671.96 × 2,779.58
4. Step 4: Simplify right side
   3,123.83x = 12,986,063.22
5. Step 5: Solve for x
   x = 12,986,063.22/3,123.83
6. Step 6: Final answer
   x = 4,157.10