Finding the Fourth Proportional to 1,417.21, 1,955.12 and 827.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.21 : 1,955.12 = 827.48 : x
2. Step 2: Convert to fraction form
   1,417.21/1,955.12 = 827.48/x
3. Step 3: Cross multiply
   1,417.21x = 1,955.12 × 827.48
4. Step 4: Simplify right side
   1,417.21x = 1,617,823.45
5. Step 5: Solve for x
   x = 1,617,823.45/1,417.21
6. Step 6: Final answer
   x = 1,141.56