Finding the Fourth Proportional to 2,455.50, 3,684.06 and 993.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.50 : 3,684.06 = 993.86 : x
2. Step 2: Convert to fraction form
   2,455.50/3,684.06 = 993.86/x
3. Step 3: Cross multiply
   2,455.50x = 3,684.06 × 993.86
4. Step 4: Simplify right side
   2,455.50x = 3,661,421.45
5. Step 5: Solve for x
   x = 3,661,421.45/2,455.50
6. Step 6: Final answer
   x = 1,491.11