Finding the Fourth Proportional to 1,815.82, 2,506.24 and 1,152.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.82 : 2,506.24 = 1,152.55 : x
2. Step 2: Convert to fraction form
   1,815.82/2,506.24 = 1,152.55/x
3. Step 3: Cross multiply
   1,815.82x = 2,506.24 × 1,152.55
4. Step 4: Simplify right side
   1,815.82x = 2,888,571.49
5. Step 5: Solve for x
   x = 2,888,571.49/1,815.82
6. Step 6: Final answer
   x = 1,590.78