Finding the Fourth Proportional to 2,779.72, 3,837.40 and 2,148.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,779.72 : 3,837.40 = 2,148.82 : x
2. Step 2: Convert to fraction form
   2,779.72/3,837.40 = 2,148.82/x
3. Step 3: Cross multiply
   2,779.72x = 3,837.40 × 2,148.82
4. Step 4: Simplify right side
   2,779.72x = 8,245,866.90
5. Step 5: Solve for x
   x = 8,245,866.90/2,779.72
6. Step 6: Final answer
   x = 2,966.44