Finding the Fourth Proportional to 2,405.98, 3,320.61 and 1,742.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.98 : 3,320.61 = 1,742.59 : x
2. Step 2: Convert to fraction form
   2,405.98/3,320.61 = 1,742.59/x
3. Step 3: Cross multiply
   2,405.98x = 3,320.61 × 1,742.59
4. Step 4: Simplify right side
   2,405.98x = 5,786,461.78
5. Step 5: Solve for x
   x = 5,786,461.78/2,405.98
6. Step 6: Final answer
   x = 2,405.03