Finding the Fourth Proportional to 5,419.76, 8,128.71 and 1,523.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.76 : 8,128.71 = 1,523.25 : x
2. Step 2: Convert to fraction form
   5,419.76/8,128.71 = 1,523.25/x
3. Step 3: Cross multiply
   5,419.76x = 8,128.71 × 1,523.25
4. Step 4: Simplify right side
   5,419.76x = 12,382,057.51
5. Step 5: Solve for x
   x = 12,382,057.51/5,419.76
6. Step 6: Final answer
   x = 2,284.62