Finding the Fourth Proportional to 2,443.47, 3,667.74 and 1,211.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.47 : 3,667.74 = 1,211.76 : x
2. Step 2: Convert to fraction form
   2,443.47/3,667.74 = 1,211.76/x
3. Step 3: Cross multiply
   2,443.47x = 3,667.74 × 1,211.76
4. Step 4: Simplify right side
   2,443.47x = 4,444,420.62
5. Step 5: Solve for x
   x = 4,444,420.62/2,443.47
6. Step 6: Final answer
   x = 1,818.90