Finding the Fourth Proportional to 2,405.50, 3,319.59 and 1,357.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.50 : 3,319.59 = 1,357.81 : x
2. Step 2: Convert to fraction form
   2,405.50/3,319.59 = 1,357.81/x
3. Step 3: Cross multiply
   2,405.50x = 3,319.59 × 1,357.81
4. Step 4: Simplify right side
   2,405.50x = 4,507,372.50
5. Step 5: Solve for x
   x = 4,507,372.50/2,405.50
6. Step 6: Final answer
   x = 1,873.78