Finding the Fourth Proportional to 2,181.94, 3,009.10 and 1,623.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.94 : 3,009.10 = 1,623.82 : x
2. Step 2: Convert to fraction form
   2,181.94/3,009.10 = 1,623.82/x
3. Step 3: Cross multiply
   2,181.94x = 3,009.10 × 1,623.82
4. Step 4: Simplify right side
   2,181.94x = 4,886,236.76
5. Step 5: Solve for x
   x = 4,886,236.76/2,181.94
6. Step 6: Final answer
   x = 2,239.40