Finding the Fourth Proportional to 2,411.82, 3,611.04 and 1,239.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.82 : 3,611.04 = 1,239.30 : x
2. Step 2: Convert to fraction form
   2,411.82/3,611.04 = 1,239.30/x
3. Step 3: Cross multiply
   2,411.82x = 3,611.04 × 1,239.30
4. Step 4: Simplify right side
   2,411.82x = 4,475,161.87
5. Step 5: Solve for x
   x = 4,475,161.87/2,411.82
6. Step 6: Final answer
   x = 1,855.51