Finding the Fourth Proportional to 2,491.20, 3,438.72 and 1,707.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.20 : 3,438.72 = 1,707.84 : x
2. Step 2: Convert to fraction form
   2,491.20/3,438.72 = 1,707.84/x
3. Step 3: Cross multiply
   2,491.20x = 3,438.72 × 1,707.84
4. Step 4: Simplify right side
   2,491.20x = 5,872,783.56
5. Step 5: Solve for x
   x = 5,872,783.56/2,491.20
6. Step 6: Final answer
   x = 2,357.41