Finding the Fourth Proportional to 2,813.34, 3,879.48 and 1,868.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,813.34 : 3,879.48 = 1,868.82 : x
2. Step 2: Convert to fraction form
   2,813.34/3,879.48 = 1,868.82/x
3. Step 3: Cross multiply
   2,813.34x = 3,879.48 × 1,868.82
4. Step 4: Simplify right side
   2,813.34x = 7,250,049.81
5. Step 5: Solve for x
   x = 7,250,049.81/2,813.34
6. Step 6: Final answer
   x = 2,577.03