Finding the Fourth Proportional to 3,123.82, 4,310.10 and 1,865.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.82 : 4,310.10 = 1,865.33 : x
2. Step 2: Convert to fraction form
   3,123.82/4,310.10 = 1,865.33/x
3. Step 3: Cross multiply
   3,123.82x = 4,310.10 × 1,865.33
4. Step 4: Simplify right side
   3,123.82x = 8,039,758.83
5. Step 5: Solve for x
   x = 8,039,758.83/3,123.82
6. Step 6: Final answer
   x = 2,573.69