Finding the Fourth Proportional to 2,455.83, 3,388.37 and 1,407.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.83 : 3,388.37 = 1,407.69 : x
2. Step 2: Convert to fraction form
   2,455.83/3,388.37 = 1,407.69/x
3. Step 3: Cross multiply
   2,455.83x = 3,388.37 × 1,407.69
4. Step 4: Simplify right side
   2,455.83x = 4,769,767.53
5. Step 5: Solve for x
   x = 4,769,767.53/2,455.83
6. Step 6: Final answer
   x = 1,942.22