Finding the Fourth Proportional to 2,539.61, 3,806.27 and 1,152.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.61 : 3,806.27 = 1,152.55 : x
2. Step 2: Convert to fraction form
   2,539.61/3,806.27 = 1,152.55/x
3. Step 3: Cross multiply
   2,539.61x = 3,806.27 × 1,152.55
4. Step 4: Simplify right side
   2,539.61x = 4,386,916.49
5. Step 5: Solve for x
   x = 4,386,916.49/2,539.61
6. Step 6: Final answer
   x = 1,727.40