Finding the Fourth Proportional to 2,454.09, 3,386.98 and 1,406.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.09 : 3,386.98 = 1,406.15 : x
2. Step 2: Convert to fraction form
   2,454.09/3,386.98 = 1,406.15/x
3. Step 3: Cross multiply
   2,454.09x = 3,386.98 × 1,406.15
4. Step 4: Simplify right side
   2,454.09x = 4,762,601.93
5. Step 5: Solve for x
   x = 4,762,601.93/2,454.09
6. Step 6: Final answer
   x = 1,940.68