Finding the Fourth Proportional to 1,722.18, 2,375.83 and 1,058.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.18 : 2,375.83 = 1,058.79 : x
2. Step 2: Convert to fraction form
   1,722.18/2,375.83 = 1,058.79/x
3. Step 3: Cross multiply
   1,722.18x = 2,375.83 × 1,058.79
4. Step 4: Simplify right side
   1,722.18x = 2,515,505.05
5. Step 5: Solve for x
   x = 2,515,505.05/1,722.18
6. Step 6: Final answer
   x = 1,460.65