Finding the Fourth Proportional to 3,615.89, 5,423.83 and 1,887.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.89 : 5,423.83 = 1,887.89 : x
2. Step 2: Convert to fraction form
   3,615.89/5,423.83 = 1,887.89/x
3. Step 3: Cross multiply
   3,615.89x = 5,423.83 × 1,887.89
4. Step 4: Simplify right side
   3,615.89x = 10,239,594.42
5. Step 5: Solve for x
   x = 10,239,594.42/3,615.89
6. Step 6: Final answer
   x = 2,831.83