Finding the Fourth Proportional to 1,707.59, 2,560.78 and 1,160.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.59 : 2,560.78 = 1,160.23 : x
2. Step 2: Convert to fraction form
   1,707.59/2,560.78 = 1,160.23/x
3. Step 3: Cross multiply
   1,707.59x = 2,560.78 × 1,160.23
4. Step 4: Simplify right side
   1,707.59x = 2,971,093.78
5. Step 5: Solve for x
   x = 2,971,093.78/1,707.59
6. Step 6: Final answer
   x = 1,739.93