Finding the Fourth Proportional to 2,453.69, 3,680.94 and 1,138.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.69 : 3,680.94 = 1,138.76 : x
2. Step 2: Convert to fraction form
   2,453.69/3,680.94 = 1,138.76/x
3. Step 3: Cross multiply
   2,453.69x = 3,680.94 × 1,138.76
4. Step 4: Simplify right side
   2,453.69x = 4,191,688.83
5. Step 5: Solve for x
   x = 4,191,688.83/2,453.69
6. Step 6: Final answer
   x = 1,708.32