Finding the Fourth Proportional to 3,521.89, 5,282.52 and 1,057.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.89 : 5,282.52 = 1,057.26 : x
2. Step 2: Convert to fraction form
   3,521.89/5,282.52 = 1,057.26/x
3. Step 3: Cross multiply
   3,521.89x = 5,282.52 × 1,057.26
4. Step 4: Simplify right side
   3,521.89x = 5,584,997.10
5. Step 5: Solve for x
   x = 5,584,997.10/3,521.89
6. Step 6: Final answer
   x = 1,585.80