Finding the Fourth Proportional to 1,668.98, 2,499.71 and 803.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668.98 : 2,499.71 = 803.94 : x
2. Step 2: Convert to fraction form
   1,668.98/2,499.71 = 803.94/x
3. Step 3: Cross multiply
   1,668.98x = 2,499.71 × 803.94
4. Step 4: Simplify right side
   1,668.98x = 2,009,616.86
5. Step 5: Solve for x
   x = 2,009,616.86/1,668.98
6. Step 6: Final answer
   x = 1,204.10