Finding the Fourth Proportional to 3,488.25, 5,234.78 and 1,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,488.25 : 5,234.78 = 1,436.25 : x
2. Step 2: Convert to fraction form
   3,488.25/5,234.78 = 1,436.25/x
3. Step 3: Cross multiply
   3,488.25x = 5,234.78 × 1,436.25
4. Step 4: Simplify right side
   3,488.25x = 7,518,445.59
5. Step 5: Solve for x
   x = 7,518,445.59/3,488.25
6. Step 6: Final answer
   x = 2,155.36