Finding the Fourth Proportional to 3,056.51, 4,585.56 and 865.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,056.51 : 4,585.56 = 865.25 : x
2. Step 2: Convert to fraction form
   3,056.51/4,585.56 = 865.25/x
3. Step 3: Cross multiply
   3,056.51x = 4,585.56 × 865.25
4. Step 4: Simplify right side
   3,056.51x = 3,967,632.86
5. Step 5: Solve for x
   x = 3,967,632.86/3,056.51
6. Step 6: Final answer
   x = 1,298.09