Finding the Fourth Proportional to 1,152.91, 1,730.25 and 845.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.91 : 1,730.25 = 845.55 : x
2. Step 2: Convert to fraction form
   1,152.91/1,730.25 = 845.55/x
3. Step 3: Cross multiply
   1,152.91x = 1,730.25 × 845.55
4. Step 4: Simplify right side
   1,152.91x = 1,463,012.89
5. Step 5: Solve for x
   x = 1,463,012.89/1,152.91
6. Step 6: Final answer
   x = 1,268.97