Finding the Fourth Proportional to 1,882.38, 2,597.94 and 1,221.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,882.38 : 2,597.94 = 1,221.18 : x
2. Step 2: Convert to fraction form
   1,882.38/2,597.94 = 1,221.18/x
3. Step 3: Cross multiply
   1,882.38x = 2,597.94 × 1,221.18
4. Step 4: Simplify right side
   1,882.38x = 3,172,552.37
5. Step 5: Solve for x
   x = 3,172,552.37/1,882.38
6. Step 6: Final answer
   x = 1,685.39