Finding the Fourth Proportional to 2,185.07, 3,014.69 and 1,398.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.07 : 3,014.69 = 1,398.96 : x
2. Step 2: Convert to fraction form
   2,185.07/3,014.69 = 1,398.96/x
3. Step 3: Cross multiply
   2,185.07x = 3,014.69 × 1,398.96
4. Step 4: Simplify right side
   2,185.07x = 4,217,423.73
5. Step 5: Solve for x
   x = 4,217,423.73/2,185.07
6. Step 6: Final answer
   x = 1,930.11