Finding the Fourth Proportional to 1,707.42, 2,357.42 and 1,308.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.42 : 2,357.42 = 1,308.39 : x
2. Step 2: Convert to fraction form
   1,707.42/2,357.42 = 1,308.39/x
3. Step 3: Cross multiply
   1,707.42x = 2,357.42 × 1,308.39
4. Step 4: Simplify right side
   1,707.42x = 3,084,424.75
5. Step 5: Solve for x
   x = 3,084,424.75/1,707.42
6. Step 6: Final answer
   x = 1,806.48