Finding the Fourth Proportional to 1,435.30, 2,152.92 and 817.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.30 : 2,152.92 = 817.69 : x
2. Step 2: Convert to fraction form
   1,435.30/2,152.92 = 817.69/x
3. Step 3: Cross multiply
   1,435.30x = 2,152.92 × 817.69
4. Step 4: Simplify right side
   1,435.30x = 1,760,422.88
5. Step 5: Solve for x
   x = 1,760,422.88/1,435.30
6. Step 6: Final answer
   x = 1,226.52