Finding the Fourth Proportional to 2,191.34, 3,289.35 and 1,219.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.34 : 3,289.35 = 1,219.34 : x
2. Step 2: Convert to fraction form
   2,191.34/3,289.35 = 1,219.34/x
3. Step 3: Cross multiply
   2,191.34x = 3,289.35 × 1,219.34
4. Step 4: Simplify right side
   2,191.34x = 4,010,836.03
5. Step 5: Solve for x
   x = 4,010,836.03/2,191.34
6. Step 6: Final answer
   x = 1,830.31