Finding the Fourth Proportional to 1,921.65, 2,651.91 and 1,082.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.65 : 2,651.91 = 1,082.34 : x
2. Step 2: Convert to fraction form
   1,921.65/2,651.91 = 1,082.34/x
3. Step 3: Cross multiply
   1,921.65x = 2,651.91 × 1,082.34
4. Step 4: Simplify right side
   1,921.65x = 2,870,268.27
5. Step 5: Solve for x
   x = 2,870,268.27/1,921.65
6. Step 6: Final answer
   x = 1,493.65