Finding the Fourth Proportional to 1,681.77, 2,522.56 and 804.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.77 : 2,522.56 = 804.89 : x
2. Step 2: Convert to fraction form
   1,681.77/2,522.56 = 804.89/x
3. Step 3: Cross multiply
   1,681.77x = 2,522.56 × 804.89
4. Step 4: Simplify right side
   1,681.77x = 2,030,387.61
5. Step 5: Solve for x
   x = 2,030,387.61/1,681.77
6. Step 6: Final answer
   x = 1,207.29