Finding the Fourth Proportional to 1,455.41, 2,181.33 and 674.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,455.41 : 2,181.33 = 674.35 : x
2. Step 2: Convert to fraction form
   1,455.41/2,181.33 = 674.35/x
3. Step 3: Cross multiply
   1,455.41x = 2,181.33 × 674.35
4. Step 4: Simplify right side
   1,455.41x = 1,470,979.89
5. Step 5: Solve for x
   x = 1,470,979.89/1,455.41
6. Step 6: Final answer
   x = 1,010.70