Finding the Fourth Proportional to 1,707.48, 2,357.12 and 1,288.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.48 : 2,357.12 = 1,288.01 : x
2. Step 2: Convert to fraction form
   1,707.48/2,357.12 = 1,288.01/x
3. Step 3: Cross multiply
   1,707.48x = 2,357.12 × 1,288.01
4. Step 4: Simplify right side
   1,707.48x = 3,036,003.24
5. Step 5: Solve for x
   x = 3,036,003.24/1,707.48
6. Step 6: Final answer
   x = 1,778.06