Finding the Fourth Proportional to 1,644.32, 2,467.50 and 670.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.32 : 2,467.50 = 670.42 : x
2. Step 2: Convert to fraction form
   1,644.32/2,467.50 = 670.42/x
3. Step 3: Cross multiply
   1,644.32x = 2,467.50 × 670.42
4. Step 4: Simplify right side
   1,644.32x = 1,654,261.35
5. Step 5: Solve for x
   x = 1,654,261.35/1,644.32
6. Step 6: Final answer
   x = 1,006.05