Finding the Fourth Proportional to 3,691.30, 5,536.07 and 1,058.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,691.30 : 5,536.07 = 1,058.72 : x
2. Step 2: Convert to fraction form
   3,691.30/5,536.07 = 1,058.72/x
3. Step 3: Cross multiply
   3,691.30x = 5,536.07 × 1,058.72
4. Step 4: Simplify right side
   3,691.30x = 5,861,148.03
5. Step 5: Solve for x
   x = 5,861,148.03/3,691.30
6. Step 6: Final answer
   x = 1,587.83