Finding the Fourth Proportional to 1,713.16, 2,568.56 and 880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,713.16 : 2,568.56 = 880.72 : x
2. Step 2: Convert to fraction form
   1,713.16/2,568.56 = 880.72/x
3. Step 3: Cross multiply
   1,713.16x = 2,568.56 × 880.72
4. Step 4: Simplify right side
   1,713.16x = 2,262,182.16
5. Step 5: Solve for x
   x = 2,262,182.16/1,713.16
6. Step 6: Final answer
   x = 1,320.47