Finding the Fourth Proportional to 2,583.72, 3,874.14 and 1,431.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.72 : 3,874.14 = 1,431.72 : x
2. Step 2: Convert to fraction form
   2,583.72/3,874.14 = 1,431.72/x
3. Step 3: Cross multiply
   2,583.72x = 3,874.14 × 1,431.72
4. Step 4: Simplify right side
   2,583.72x = 5,546,683.72
5. Step 5: Solve for x
   x = 5,546,683.72/2,583.72
6. Step 6: Final answer
   x = 2,146.78