Finding the Fourth Proportional to 3,688.89, 5,529.99 and 1,840.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.89 : 5,529.99 = 1,840.57 : x
2. Step 2: Convert to fraction form
   3,688.89/5,529.99 = 1,840.57/x
3. Step 3: Cross multiply
   3,688.89x = 5,529.99 × 1,840.57
4. Step 4: Simplify right side
   3,688.89x = 10,178,333.69
5. Step 5: Solve for x
   x = 10,178,333.69/3,688.89
6. Step 6: Final answer
   x = 2,759.19