Finding the Fourth Proportional to 1,668.89, 2,501.51 and 801.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668.89 : 2,501.51 = 801.38 : x
2. Step 2: Convert to fraction form
   1,668.89/2,501.51 = 801.38/x
3. Step 3: Cross multiply
   1,668.89x = 2,501.51 × 801.38
4. Step 4: Simplify right side
   1,668.89x = 2,004,643.57
5. Step 5: Solve for x
   x = 2,004,643.57/1,668.89
6. Step 6: Final answer
   x = 1,201.19