Finding the Fourth Proportional to 1,723.66, 2,581.71 and 1,131.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,723.66 : 2,581.71 = 1,131.58 : x
2. Step 2: Convert to fraction form
   1,723.66/2,581.71 = 1,131.58/x
3. Step 3: Cross multiply
   1,723.66x = 2,581.71 × 1,131.58
4. Step 4: Simplify right side
   1,723.66x = 2,921,410.39
5. Step 5: Solve for x
   x = 2,921,410.39/1,723.66
6. Step 6: Final answer
   x = 1,694.89