Finding the Fourth Proportional to 2,191.30, 3,281.55 and 1,456.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.30 : 3,281.55 = 1,456.90 : x
2. Step 2: Convert to fraction form
   2,191.30/3,281.55 = 1,456.90/x
3. Step 3: Cross multiply
   2,191.30x = 3,281.55 × 1,456.90
4. Step 4: Simplify right side
   2,191.30x = 4,780,890.20
5. Step 5: Solve for x
   x = 4,780,890.20/2,191.30
6. Step 6: Final answer
   x = 2,181.76