Finding the Fourth Proportional to 880.34, 1,215.83 and 826.07

Step by Step Solution

1. Step 1: Write the proportion equation
   880.34 : 1,215.83 = 826.07 : x
2. Step 2: Convert to fraction form
   880.34/1,215.83 = 826.07/x
3. Step 3: Cross multiply
   880.34x = 1,215.83 × 826.07
4. Step 4: Simplify right side
   880.34x = 1,004,360.69
5. Step 5: Solve for x
   x = 1,004,360.69/880.34
6. Step 6: Final answer
   x = 1,140.88