Finding the Fourth Proportional to 3,777.69, 5,667.30 and 1,145.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,777.69 : 5,667.30 = 1,145.37 : x
2. Step 2: Convert to fraction form
   3,777.69/5,667.30 = 1,145.37/x
3. Step 3: Cross multiply
   3,777.69x = 5,667.30 × 1,145.37
4. Step 4: Simplify right side
   3,777.69x = 6,491,155.40
5. Step 5: Solve for x
   x = 6,491,155.40/3,777.69
6. Step 6: Final answer
   x = 1,718.29