Finding the Fourth Proportional to 1,993.17, 2,987.81 and 1,116.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993.17 : 2,987.81 = 1,116.09 : x
2. Step 2: Convert to fraction form
   1,993.17/2,987.81 = 1,116.09/x
3. Step 3: Cross multiply
   1,993.17x = 2,987.81 × 1,116.09
4. Step 4: Simplify right side
   1,993.17x = 3,334,658.20
5. Step 5: Solve for x
   x = 3,334,658.20/1,993.17
6. Step 6: Final answer
   x = 1,673.05