Finding the Fourth Proportional to 4,086.76, 6,131.56 and 1,623.28

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.76 : 6,131.56 = 1,623.28 : x
2. Step 2: Convert to fraction form
   4,086.76/6,131.56 = 1,623.28/x
3. Step 3: Cross multiply
   4,086.76x = 6,131.56 × 1,623.28
4. Step 4: Simplify right side
   4,086.76x = 9,953,238.72
5. Step 5: Solve for x
   x = 9,953,238.72/4,086.76
6. Step 6: Final answer
   x = 2,435.48