Finding the Fourth Proportional to 3,160.59, 4,742.61 and 2,121.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,160.59 : 4,742.61 = 2,121.46 : x
2. Step 2: Convert to fraction form
   3,160.59/4,742.61 = 2,121.46/x
3. Step 3: Cross multiply
   3,160.59x = 4,742.61 × 2,121.46
4. Step 4: Simplify right side
   3,160.59x = 10,061,237.60
5. Step 5: Solve for x
   x = 10,061,237.60/3,160.59
6. Step 6: Final answer
   x = 3,183.35