Finding the Fourth Proportional to 3,011.34, 4,155.60 and 1,685.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,011.34 : 4,155.60 = 1,685.10 : x
2. Step 2: Convert to fraction form
   3,011.34/4,155.60 = 1,685.10/x
3. Step 3: Cross multiply
   3,011.34x = 4,155.60 × 1,685.10
4. Step 4: Simplify right side
   3,011.34x = 7,002,601.56
5. Step 5: Solve for x
   x = 7,002,601.56/3,011.34
6. Step 6: Final answer
   x = 2,325.41