Finding the Fourth Proportional to 2,617.25, 3,611.82 and 1,438.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.25 : 3,611.82 = 1,438.31 : x
2. Step 2: Convert to fraction form
   2,617.25/3,611.82 = 1,438.31/x
3. Step 3: Cross multiply
   2,617.25x = 3,611.82 × 1,438.31
4. Step 4: Simplify right side
   2,617.25x = 5,194,916.82
5. Step 5: Solve for x
   x = 5,194,916.82/2,617.25
6. Step 6: Final answer
   x = 1,984.88