Finding the Fourth Proportional to 3,923.91, 5,885.86 and 1,002.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923.91 : 5,885.86 = 1,002.21 : x
2. Step 2: Convert to fraction form
   3,923.91/5,885.86 = 1,002.21/x
3. Step 3: Cross multiply
   3,923.91x = 5,885.86 × 1,002.21
4. Step 4: Simplify right side
   3,923.91x = 5,898,867.75
5. Step 5: Solve for x
   x = 5,898,867.75/3,923.91
6. Step 6: Final answer
   x = 1,503.31