Finding the Fourth Proportional to 2,671.72, 4,009.32 and 1,211

Step by Step Solution

1. Step 1: Write the proportion equation
   2,671.72 : 4,009.32 = 1,211 : x
2. Step 2: Convert to fraction form
   2,671.72/4,009.32 = 1,211/x
3. Step 3: Cross multiply
   2,671.72x = 4,009.32 × 1,211
4. Step 4: Simplify right side
   2,671.72x = 4,855,286.52
5. Step 5: Solve for x
   x = 4,855,286.52/2,671.72
6. Step 6: Final answer
   x = 1,817.29