Finding the Fourth Proportional to 2,575.29, 3,859.83 and 1,186.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.29 : 3,859.83 = 1,186.72 : x
2. Step 2: Convert to fraction form
   2,575.29/3,859.83 = 1,186.72/x
3. Step 3: Cross multiply
   2,575.29x = 3,859.83 × 1,186.72
4. Step 4: Simplify right side
   2,575.29x = 4,580,537.46
5. Step 5: Solve for x
   x = 4,580,537.46/2,575.29
6. Step 6: Final answer
   x = 1,778.65