Finding the Fourth Proportional to 2,185.61, 3,014.96 and 1,387.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.61 : 3,014.96 = 1,387.49 : x
2. Step 2: Convert to fraction form
   2,185.61/3,014.96 = 1,387.49/x
3. Step 3: Cross multiply
   2,185.61x = 3,014.96 × 1,387.49
4. Step 4: Simplify right side
   2,185.61x = 4,183,204.84
5. Step 5: Solve for x
   x = 4,183,204.84/2,185.61
6. Step 6: Final answer
   x = 1,913.98