Finding the Fourth Proportional to 1,901.34, 2,852.69 and 668.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.34 : 2,852.69 = 668.79 : x
2. Step 2: Convert to fraction form
   1,901.34/2,852.69 = 668.79/x
3. Step 3: Cross multiply
   1,901.34x = 2,852.69 × 668.79
4. Step 4: Simplify right side
   1,901.34x = 1,907,847.20
5. Step 5: Solve for x
   x = 1,907,847.20/1,901.34
6. Step 6: Final answer
   x = 1,003.42