Finding the Fourth Proportional to 5,419.77, 8,128.71 and 1,523.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.77 : 8,128.71 = 1,523.25 : x
2. Step 2: Convert to fraction form
   5,419.77/8,128.71 = 1,523.25/x
3. Step 3: Cross multiply
   5,419.77x = 8,128.71 × 1,523.25
4. Step 4: Simplify right side
   5,419.77x = 12,382,057.51
5. Step 5: Solve for x
   x = 12,382,057.51/5,419.77
6. Step 6: Final answer
   x = 2,284.61