Finding the Fourth Proportional to 2,219.69, 3,063.16 and 1,211.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.69 : 3,063.16 = 1,211.39 : x
2. Step 2: Convert to fraction form
   2,219.69/3,063.16 = 1,211.39/x
3. Step 3: Cross multiply
   2,219.69x = 3,063.16 × 1,211.39
4. Step 4: Simplify right side
   2,219.69x = 3,710,663.05
5. Step 5: Solve for x
   x = 3,710,663.05/2,219.69
6. Step 6: Final answer
   x = 1,671.71