Finding the Fourth Proportional to 2,181.12, 3,003.39 and 1,972.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.12 : 3,003.39 = 1,972.74 : x
2. Step 2: Convert to fraction form
   2,181.12/3,003.39 = 1,972.74/x
3. Step 3: Cross multiply
   2,181.12x = 3,003.39 × 1,972.74
4. Step 4: Simplify right side
   2,181.12x = 5,924,907.59
5. Step 5: Solve for x
   x = 5,924,907.59/2,181.12
6. Step 6: Final answer
   x = 2,716.45