Finding the Fourth Proportional to 2,301.72, 3,175.36 and 1,555.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,301.72 : 3,175.36 = 1,555.41 : x
2. Step 2: Convert to fraction form
   2,301.72/3,175.36 = 1,555.41/x
3. Step 3: Cross multiply
   2,301.72x = 3,175.36 × 1,555.41
4. Step 4: Simplify right side
   2,301.72x = 4,938,978.68
5. Step 5: Solve for x
   x = 4,938,978.68/2,301.72
6. Step 6: Final answer
   x = 2,145.78