Finding the Fourth Proportional to 3,011.53, 4,155.71 and 1,685.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,011.53 : 4,155.71 = 1,685.22 : x
2. Step 2: Convert to fraction form
   3,011.53/4,155.71 = 1,685.22/x
3. Step 3: Cross multiply
   3,011.53x = 4,155.71 × 1,685.22
4. Step 4: Simplify right side
   3,011.53x = 7,003,289.82
5. Step 5: Solve for x
   x = 7,003,289.82/3,011.53
6. Step 6: Final answer
   x = 2,325.49