Finding the Fourth Proportional to 1,711.56, 2,362.86 and 1,317.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,711.56 : 2,362.86 = 1,317.72 : x
2. Step 2: Convert to fraction form
   1,711.56/2,362.86 = 1,317.72/x
3. Step 3: Cross multiply
   1,711.56x = 2,362.86 × 1,317.72
4. Step 4: Simplify right side
   1,711.56x = 3,113,587.88
5. Step 5: Solve for x
   x = 3,113,587.88/1,711.56
6. Step 6: Final answer
   x = 1,819.15