Finding the Fourth Proportional to 3,185.76, 4,779.84 and 1,238.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.76 : 4,779.84 = 1,238.10 : x
2. Step 2: Convert to fraction form
   3,185.76/4,779.84 = 1,238.10/x
3. Step 3: Cross multiply
   3,185.76x = 4,779.84 × 1,238.10
4. Step 4: Simplify right side
   3,185.76x = 5,917,919.90
5. Step 5: Solve for x
   x = 5,917,919.90/3,185.76
6. Step 6: Final answer
   x = 1,857.62