Finding the Fourth Proportional to 2,454.02, 3,386.16 and 1,405.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.02 : 3,386.16 = 1,405.88 : x
2. Step 2: Convert to fraction form
   2,454.02/3,386.16 = 1,405.88/x
3. Step 3: Cross multiply
   2,454.02x = 3,386.16 × 1,405.88
4. Step 4: Simplify right side
   2,454.02x = 4,760,517.69
5. Step 5: Solve for x
   x = 4,760,517.69/2,454.02
6. Step 6: Final answer
   x = 1,939.89