Finding the Fourth Proportional to 2,549.86, 3,815.67 and 1,998.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.86 : 3,815.67 = 1,998.25 : x
2. Step 2: Convert to fraction form
   2,549.86/3,815.67 = 1,998.25/x
3. Step 3: Cross multiply
   2,549.86x = 3,815.67 × 1,998.25
4. Step 4: Simplify right side
   2,549.86x = 7,624,662.58
5. Step 5: Solve for x
   x = 7,624,662.58/2,549.86
6. Step 6: Final answer
   x = 2,990.23