Finding the Fourth Proportional to 1,435.55, 2,150.28 and 818.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.55 : 2,150.28 = 818.93 : x
2. Step 2: Convert to fraction form
   1,435.55/2,150.28 = 818.93/x
3. Step 3: Cross multiply
   1,435.55x = 2,150.28 × 818.93
4. Step 4: Simplify right side
   1,435.55x = 1,760,934.18
5. Step 5: Solve for x
   x = 1,760,934.18/1,435.55
6. Step 6: Final answer
   x = 1,226.67