Finding the Fourth Proportional to 1,914.24, 2,870.40 and 681.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.24 : 2,870.40 = 681.46 : x
2. Step 2: Convert to fraction form
   1,914.24/2,870.40 = 681.46/x
3. Step 3: Cross multiply
   1,914.24x = 2,870.40 × 681.46
4. Step 4: Simplify right side
   1,914.24x = 1,956,062.78
5. Step 5: Solve for x
   x = 1,956,062.78/1,914.24
6. Step 6: Final answer
   x = 1,021.85