Finding the Fourth Proportional to 2,357.73, 3,531.63 and 1,123.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.73 : 3,531.63 = 1,123.89 : x
2. Step 2: Convert to fraction form
   2,357.73/3,531.63 = 1,123.89/x
3. Step 3: Cross multiply
   2,357.73x = 3,531.63 × 1,123.89
4. Step 4: Simplify right side
   2,357.73x = 3,969,163.64
5. Step 5: Solve for x
   x = 3,969,163.64/2,357.73
6. Step 6: Final answer
   x = 1,683.47