Finding the Fourth Proportional to 1,641.45, 2,460.01 and 667.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.45 : 2,460.01 = 667.02 : x
2. Step 2: Convert to fraction form
   1,641.45/2,460.01 = 667.02/x
3. Step 3: Cross multiply
   1,641.45x = 2,460.01 × 667.02
4. Step 4: Simplify right side
   1,641.45x = 1,640,870.84
5. Step 5: Solve for x
   x = 1,640,870.84/1,641.45
6. Step 6: Final answer
   x = 999.65