Finding the Fourth Proportional to 2,198.39, 3,030.17 and 1,357.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.39 : 3,030.17 = 1,357.25 : x
2. Step 2: Convert to fraction form
   2,198.39/3,030.17 = 1,357.25/x
3. Step 3: Cross multiply
   2,198.39x = 3,030.17 × 1,357.25
4. Step 4: Simplify right side
   2,198.39x = 4,112,676.30
5. Step 5: Solve for x
   x = 4,112,676.30/2,198.39
6. Step 6: Final answer
   x = 1,870.77