Finding the Fourth Proportional to 3,488.52, 5,229.78 and 1,406.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,488.52 : 5,229.78 = 1,406.28 : x
2. Step 2: Convert to fraction form
   3,488.52/5,229.78 = 1,406.28/x
3. Step 3: Cross multiply
   3,488.52x = 5,229.78 × 1,406.28
4. Step 4: Simplify right side
   3,488.52x = 7,354,535.02
5. Step 5: Solve for x
   x = 7,354,535.02/3,488.52
6. Step 6: Final answer
   x = 2,108.21