Finding the Fourth Proportional to 2,405.79, 3,320.00 and 1,357.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.79 : 3,320.00 = 1,357.86 : x
2. Step 2: Convert to fraction form
   2,405.79/3,320.00 = 1,357.86/x
3. Step 3: Cross multiply
   2,405.79x = 3,320.00 × 1,357.86
4. Step 4: Simplify right side
   2,405.79x = 4,508,082.56
5. Step 5: Solve for x
   x = 4,508,082.56/2,405.79
6. Step 6: Final answer
   x = 1,873.84