Finding the Fourth Proportional to 1,821.67, 2,733.72 and 667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.67 : 2,733.72 = 667.42 : x
2. Step 2: Convert to fraction form
   1,821.67/2,733.72 = 667.42/x
3. Step 3: Cross multiply
   1,821.67x = 2,733.72 × 667.42
4. Step 4: Simplify right side
   1,821.67x = 1,824,539.40
5. Step 5: Solve for x
   x = 1,824,539.40/1,821.67
6. Step 6: Final answer
   x = 1,001.58