Finding the Fourth Proportional to 4,086.23, 6,128.74 and 1,488.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.23 : 6,128.74 = 1,488.56 : x
2. Step 2: Convert to fraction form
   4,086.23/6,128.74 = 1,488.56/x
3. Step 3: Cross multiply
   4,086.23x = 6,128.74 × 1,488.56
4. Step 4: Simplify right side
   4,086.23x = 9,123,014.40
5. Step 5: Solve for x
   x = 9,123,014.40/4,086.23
6. Step 6: Final answer
   x = 2,232.62