Finding the Fourth Proportional to 3,664.18, 5,056.55 and 1,985.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.18 : 5,056.55 = 1,985.58 : x
2. Step 2: Convert to fraction form
   3,664.18/5,056.55 = 1,985.58/x
3. Step 3: Cross multiply
   3,664.18x = 5,056.55 × 1,985.58
4. Step 4: Simplify right side
   3,664.18x = 10,040,159.27
5. Step 5: Solve for x
   x = 10,040,159.27/3,664.18
6. Step 6: Final answer
   x = 2,740.08