Finding the Fourth Proportional to 2,219.63, 3,323.57 and 1,778.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.63 : 3,323.57 = 1,778.81 : x
2. Step 2: Convert to fraction form
   2,219.63/3,323.57 = 1,778.81/x
3. Step 3: Cross multiply
   2,219.63x = 3,323.57 × 1,778.81
4. Step 4: Simplify right side
   2,219.63x = 5,911,974.04
5. Step 5: Solve for x
   x = 5,911,974.04/2,219.63
6. Step 6: Final answer
   x = 2,663.50