Finding the Fourth Proportional to 2,453.40, 3,677.31 and 1,219.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.40 : 3,677.31 = 1,219.59 : x
2. Step 2: Convert to fraction form
   2,453.40/3,677.31 = 1,219.59/x
3. Step 3: Cross multiply
   2,453.40x = 3,677.31 × 1,219.59
4. Step 4: Simplify right side
   2,453.40x = 4,484,810.50
5. Step 5: Solve for x
   x = 4,484,810.50/2,453.40
6. Step 6: Final answer
   x = 1,828.00