Finding the Fourth Proportional to 2,661.18, 3,985.29 and 2,583.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.18 : 3,985.29 = 2,583.42 : x
2. Step 2: Convert to fraction form
   2,661.18/3,985.29 = 2,583.42/x
3. Step 3: Cross multiply
   2,661.18x = 3,985.29 × 2,583.42
4. Step 4: Simplify right side
   2,661.18x = 10,295,677.89
5. Step 5: Solve for x
   x = 10,295,677.89/2,661.18
6. Step 6: Final answer
   x = 3,868.84