Finding the Fourth Proportional to 1,981.81, 2,974.47 and 1,058.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.81 : 2,974.47 = 1,058.14 : x
2. Step 2: Convert to fraction form
   1,981.81/2,974.47 = 1,058.14/x
3. Step 3: Cross multiply
   1,981.81x = 2,974.47 × 1,058.14
4. Step 4: Simplify right side
   1,981.81x = 3,147,405.69
5. Step 5: Solve for x
   x = 3,147,405.69/1,981.81
6. Step 6: Final answer
   x = 1,588.15