Finding the Fourth Proportional to 2,167.45, 3,251.16 and 869.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.45 : 3,251.16 = 869.83 : x
2. Step 2: Convert to fraction form
   2,167.45/3,251.16 = 869.83/x
3. Step 3: Cross multiply
   2,167.45x = 3,251.16 × 869.83
4. Step 4: Simplify right side
   2,167.45x = 2,827,956.50
5. Step 5: Solve for x
   x = 2,827,956.50/2,167.45
6. Step 6: Final answer
   x = 1,304.74