Finding the Fourth Proportional to 2,539.69, 3,808.38 and 1,224.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.69 : 3,808.38 = 1,224.07 : x
2. Step 2: Convert to fraction form
   2,539.69/3,808.38 = 1,224.07/x
3. Step 3: Cross multiply
   2,539.69x = 3,808.38 × 1,224.07
4. Step 4: Simplify right side
   2,539.69x = 4,661,723.71
5. Step 5: Solve for x
   x = 4,661,723.71/2,539.69
6. Step 6: Final answer
   x = 1,835.55