Finding the Fourth Proportional to 1,838.32, 2,756.59 and 668.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,838.32 : 2,756.59 = 668.09 : x
2. Step 2: Convert to fraction form
   1,838.32/2,756.59 = 668.09/x
3. Step 3: Cross multiply
   1,838.32x = 2,756.59 × 668.09
4. Step 4: Simplify right side
   1,838.32x = 1,841,655.43
5. Step 5: Solve for x
   x = 1,841,655.43/1,838.32
6. Step 6: Final answer
   x = 1,001.82