Finding the Fourth Proportional to 2,415.89, 3,625.49 and 955.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.89 : 3,625.49 = 955.40 : x
2. Step 2: Convert to fraction form
   2,415.89/3,625.49 = 955.40/x
3. Step 3: Cross multiply
   2,415.89x = 3,625.49 × 955.40
4. Step 4: Simplify right side
   2,415.89x = 3,463,777.41
5. Step 5: Solve for x
   x = 3,463,777.41/2,415.89
6. Step 6: Final answer
   x = 1,433.75