Finding the Fourth Proportional to 2,405.83, 3,320.04 and 1,357.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.83 : 3,320.04 = 1,357.89 : x
2. Step 2: Convert to fraction form
   2,405.83/3,320.04 = 1,357.89/x
3. Step 3: Cross multiply
   2,405.83x = 3,320.04 × 1,357.89
4. Step 4: Simplify right side
   2,405.83x = 4,508,249.12
5. Step 5: Solve for x
   x = 4,508,249.12/2,405.83
6. Step 6: Final answer
   x = 1,873.89