Finding the Fourth Proportional to 2,219.46, 3,329.55 and 1,065.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.46 : 3,329.55 = 1,065.21 : x
2. Step 2: Convert to fraction form
   2,219.46/3,329.55 = 1,065.21/x
3. Step 3: Cross multiply
   2,219.46x = 3,329.55 × 1,065.21
4. Step 4: Simplify right side
   2,219.46x = 3,546,669.96
5. Step 5: Solve for x
   x = 3,546,669.96/2,219.46
6. Step 6: Final answer
   x = 1,597.99