Finding the Fourth Proportional to 2,575.31, 3,859.83 and 1,185.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.31 : 3,859.83 = 1,185.76 : x
2. Step 2: Convert to fraction form
   2,575.31/3,859.83 = 1,185.76/x
3. Step 3: Cross multiply
   2,575.31x = 3,859.83 × 1,185.76
4. Step 4: Simplify right side
   2,575.31x = 4,576,844.37
5. Step 5: Solve for x
   x = 4,576,844.37/2,575.31
6. Step 6: Final answer
   x = 1,777.20