Finding the Fourth Proportional to 1,644.76, 2,466.72 and 670.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.76 : 2,466.72 = 670.68 : x
2. Step 2: Convert to fraction form
   1,644.76/2,466.72 = 670.68/x
3. Step 3: Cross multiply
   1,644.76x = 2,466.72 × 670.68
4. Step 4: Simplify right side
   1,644.76x = 1,654,379.77
5. Step 5: Solve for x
   x = 1,654,379.77/1,644.76
6. Step 6: Final answer
   x = 1,005.85