Finding the Fourth Proportional to 1,323.72, 1,826.81 and 764.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.72 : 1,826.81 = 764.26 : x
2. Step 2: Convert to fraction form
   1,323.72/1,826.81 = 764.26/x
3. Step 3: Cross multiply
   1,323.72x = 1,826.81 × 764.26
4. Step 4: Simplify right side
   1,323.72x = 1,396,157.81
5. Step 5: Solve for x
   x = 1,396,157.81/1,323.72
6. Step 6: Final answer
   x = 1,054.72