Finding the Fourth Proportional to 2,378.27, 3,280.17 and 1,817.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.27 : 3,280.17 = 1,817.35 : x
2. Step 2: Convert to fraction form
   2,378.27/3,280.17 = 1,817.35/x
3. Step 3: Cross multiply
   2,378.27x = 3,280.17 × 1,817.35
4. Step 4: Simplify right side
   2,378.27x = 5,961,215.56
5. Step 5: Solve for x
   x = 5,961,215.56/2,378.27
6. Step 6: Final answer
   x = 2,506.53