Finding the Fourth Proportional to 1,198.41, 1,789.37 and 1,015.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.41 : 1,789.37 = 1,015.89 : x
2. Step 2: Convert to fraction form
   1,198.41/1,789.37 = 1,015.89/x
3. Step 3: Cross multiply
   1,198.41x = 1,789.37 × 1,015.89
4. Step 4: Simplify right side
   1,198.41x = 1,817,798.01
5. Step 5: Solve for x
   x = 1,817,798.01/1,198.41
6. Step 6: Final answer
   x = 1,516.84