Finding the Fourth Proportional to 3,873.57, 5,811.57 and 2,315.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,873.57 : 5,811.57 = 2,315.33 : x
2. Step 2: Convert to fraction form
   3,873.57/5,811.57 = 2,315.33/x
3. Step 3: Cross multiply
   3,873.57x = 5,811.57 × 2,315.33
4. Step 4: Simplify right side
   3,873.57x = 13,455,734.31
5. Step 5: Solve for x
   x = 13,455,734.31/3,873.57
6. Step 6: Final answer
   x = 3,473.73