Finding the Fourth Proportional to 2,561.31, 3,836.57 and 1,175.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.31 : 3,836.57 = 1,175.81 : x
2. Step 2: Convert to fraction form
   2,561.31/3,836.57 = 1,175.81/x
3. Step 3: Cross multiply
   2,561.31x = 3,836.57 × 1,175.81
4. Step 4: Simplify right side
   2,561.31x = 4,511,052.31
5. Step 5: Solve for x
   x = 4,511,052.31/2,561.31
6. Step 6: Final answer
   x = 1,761.23