Finding the Fourth Proportional to 1,615.48, 2,418.91 and 1,058.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.48 : 2,418.91 = 1,058.82 : x
2. Step 2: Convert to fraction form
   1,615.48/2,418.91 = 1,058.82/x
3. Step 3: Cross multiply
   1,615.48x = 2,418.91 × 1,058.82
4. Step 4: Simplify right side
   1,615.48x = 2,561,182.82
5. Step 5: Solve for x
   x = 2,561,182.82/1,615.48
6. Step 6: Final answer
   x = 1,585.41