Finding the Fourth Proportional to 3,123.89, 4,311.40 and 1,797.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.89 : 4,311.40 = 1,797.57 : x
2. Step 2: Convert to fraction form
   3,123.89/4,311.40 = 1,797.57/x
3. Step 3: Cross multiply
   3,123.89x = 4,311.40 × 1,797.57
4. Step 4: Simplify right side
   3,123.89x = 7,750,043.30
5. Step 5: Solve for x
   x = 7,750,043.30/3,123.89
6. Step 6: Final answer
   x = 2,480.90