Finding the Fourth Proportional to 1,718.72, 2,576.76 and 852.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,718.72 : 2,576.76 = 852.36 : x
2. Step 2: Convert to fraction form
   1,718.72/2,576.76 = 852.36/x
3. Step 3: Cross multiply
   1,718.72x = 2,576.76 × 852.36
4. Step 4: Simplify right side
   1,718.72x = 2,196,327.15
5. Step 5: Solve for x
   x = 2,196,327.15/1,718.72
6. Step 6: Final answer
   x = 1,277.89