Finding the Fourth Proportional to 1,914.18, 2,870.37 and 681.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.18 : 2,870.37 = 681.09 : x
2. Step 2: Convert to fraction form
   1,914.18/2,870.37 = 681.09/x
3. Step 3: Cross multiply
   1,914.18x = 2,870.37 × 681.09
4. Step 4: Simplify right side
   1,914.18x = 1,954,980.30
5. Step 5: Solve for x
   x = 1,954,980.30/1,914.18
6. Step 6: Final answer
   x = 1,021.31