Finding the Fourth Proportional to 1,357.27, 1,873.37 and 826.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.27 : 1,873.37 = 826.31 : x
2. Step 2: Convert to fraction form
   1,357.27/1,873.37 = 826.31/x
3. Step 3: Cross multiply
   1,357.27x = 1,873.37 × 826.31
4. Step 4: Simplify right side
   1,357.27x = 1,547,991.11
5. Step 5: Solve for x
   x = 1,547,991.11/1,357.27
6. Step 6: Final answer
   x = 1,140.52