Finding the Fourth Proportional to 3,124.16, 4,686.56 and 1,072.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,124.16 : 4,686.56 = 1,072.32 : x
2. Step 2: Convert to fraction form
   3,124.16/4,686.56 = 1,072.32/x
3. Step 3: Cross multiply
   3,124.16x = 4,686.56 × 1,072.32
4. Step 4: Simplify right side
   3,124.16x = 5,025,492.02
5. Step 5: Solve for x
   x = 5,025,492.02/3,124.16
6. Step 6: Final answer
   x = 1,608.59