Finding the Fourth Proportional to 2,451.06, 3,382.23 and 1,388.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.06 : 3,382.23 = 1,388.73 : x
2. Step 2: Convert to fraction form
   2,451.06/3,382.23 = 1,388.73/x
3. Step 3: Cross multiply
   2,451.06x = 3,382.23 × 1,388.73
4. Step 4: Simplify right side
   2,451.06x = 4,697,004.27
5. Step 5: Solve for x
   x = 4,697,004.27/2,451.06
6. Step 6: Final answer
   x = 1,916.32