Finding the Fourth Proportional to 2,657.89, 3,668.18 and 1,538.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.89 : 3,668.18 = 1,538.81 : x
2. Step 2: Convert to fraction form
   2,657.89/3,668.18 = 1,538.81/x
3. Step 3: Cross multiply
   2,657.89x = 3,668.18 × 1,538.81
4. Step 4: Simplify right side
   2,657.89x = 5,644,624.37
5. Step 5: Solve for x
   x = 5,644,624.37/2,657.89
6. Step 6: Final answer
   x = 2,123.73