Finding the Fourth Proportional to 2,617.32, 3,611.82 and 1,438.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.32 : 3,611.82 = 1,438.39 : x
2. Step 2: Convert to fraction form
   2,617.32/3,611.82 = 1,438.39/x
3. Step 3: Cross multiply
   2,617.32x = 3,611.82 × 1,438.39
4. Step 4: Simplify right side
   2,617.32x = 5,195,195.36
5. Step 5: Solve for x
   x = 5,195,195.36/2,617.32
6. Step 6: Final answer
   x = 1,984.93