Finding the Fourth Proportional to 1,642.06, 2,460.96 and 667.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.06 : 2,460.96 = 667.63 : x
2. Step 2: Convert to fraction form
   1,642.06/2,460.96 = 667.63/x
3. Step 3: Cross multiply
   1,642.06x = 2,460.96 × 667.63
4. Step 4: Simplify right side
   1,642.06x = 1,643,004.57
5. Step 5: Solve for x
   x = 1,643,004.57/1,642.06
6. Step 6: Final answer
   x = 1,000.58