Finding the Fourth Proportional to 2,550.86, 3,817.17 and 1,999.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.86 : 3,817.17 = 1,999.25 : x
2. Step 2: Convert to fraction form
   2,550.86/3,817.17 = 1,999.25/x
3. Step 3: Cross multiply
   2,550.86x = 3,817.17 × 1,999.25
4. Step 4: Simplify right side
   2,550.86x = 7,631,477.12
5. Step 5: Solve for x
   x = 7,631,477.12/2,550.86
6. Step 6: Final answer
   x = 2,991.73