Finding the Fourth Proportional to 1,309.10, 1,808.73 and 1,058.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309.10 : 1,808.73 = 1,058.96 : x
2. Step 2: Convert to fraction form
   1,309.10/1,808.73 = 1,058.96/x
3. Step 3: Cross multiply
   1,309.10x = 1,808.73 × 1,058.96
4. Step 4: Simplify right side
   1,309.10x = 1,915,372.72
5. Step 5: Solve for x
   x = 1,915,372.72/1,309.10
6. Step 6: Final answer
   x = 1,463.12