Finding the Fourth Proportional to 1,268.41, 1,749.32 and 826.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.41 : 1,749.32 = 826.15 : x
2. Step 2: Convert to fraction form
   1,268.41/1,749.32 = 826.15/x
3. Step 3: Cross multiply
   1,268.41x = 1,749.32 × 826.15
4. Step 4: Simplify right side
   1,268.41x = 1,445,196.59
5. Step 5: Solve for x
   x = 1,445,196.59/1,268.41
6. Step 6: Final answer
   x = 1,139.38