Finding the Fourth Proportional to 3,664.09, 5,056.35 and 1,985.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.09 : 5,056.35 = 1,985.42 : x
2. Step 2: Convert to fraction form
   3,664.09/5,056.35 = 1,985.42/x
3. Step 3: Cross multiply
   3,664.09x = 5,056.35 × 1,985.42
4. Step 4: Simplify right side
   3,664.09x = 10,038,978.42
5. Step 5: Solve for x
   x = 10,038,978.42/3,664.09
6. Step 6: Final answer
   x = 2,739.83