Finding the Fourth Proportional to 2,181.56, 3,008.16 and 1,974.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.56 : 3,008.16 = 1,974.20 : x
2. Step 2: Convert to fraction form
   2,181.56/3,008.16 = 1,974.20/x
3. Step 3: Cross multiply
   2,181.56x = 3,008.16 × 1,974.20
4. Step 4: Simplify right side
   2,181.56x = 5,938,709.47
5. Step 5: Solve for x
   x = 5,938,709.47/2,181.56
6. Step 6: Final answer
   x = 2,722.23