Finding the Fourth Proportional to 1,058.08, 1,451.83 and 1,039.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.08 : 1,451.83 = 1,039.63 : x
2. Step 2: Convert to fraction form
   1,058.08/1,451.83 = 1,039.63/x
3. Step 3: Cross multiply
   1,058.08x = 1,451.83 × 1,039.63
4. Step 4: Simplify right side
   1,058.08x = 1,509,353.57
5. Step 5: Solve for x
   x = 1,509,353.57/1,058.08
6. Step 6: Final answer
   x = 1,426.51