Finding the Fourth Proportional to 1,810.09, 2,716.81 and 1,118.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.09 : 2,716.81 = 1,118.12 : x
2. Step 2: Convert to fraction form
   1,810.09/2,716.81 = 1,118.12/x
3. Step 3: Cross multiply
   1,810.09x = 2,716.81 × 1,118.12
4. Step 4: Simplify right side
   1,810.09x = 3,037,703.22
5. Step 5: Solve for x
   x = 3,037,703.22/1,810.09
6. Step 6: Final answer
   x = 1,678.20