Finding the Fourth Proportional to 3,150.63, 4,725.77 and 810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,150.63 : 4,725.77 = 810.72 : x
2. Step 2: Convert to fraction form
   3,150.63/4,725.77 = 810.72/x
3. Step 3: Cross multiply
   3,150.63x = 4,725.77 × 810.72
4. Step 4: Simplify right side
   3,150.63x = 3,831,272.20
5. Step 5: Solve for x
   x = 3,831,272.20/3,150.63
6. Step 6: Final answer
   x = 1,216.03