Finding the Fourth Proportional to 2,539.97, 3,808.12 and 1,152.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.97 : 3,808.12 = 1,152.61 : x
2. Step 2: Convert to fraction form
   2,539.97/3,808.12 = 1,152.61/x
3. Step 3: Cross multiply
   2,539.97x = 3,808.12 × 1,152.61
4. Step 4: Simplify right side
   2,539.97x = 4,389,255.27
5. Step 5: Solve for x
   x = 4,389,255.27/2,539.97
6. Step 6: Final answer
   x = 1,728.08