Finding the Fourth Proportional to 2,763.32, 4,145.38 and 815.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.32 : 4,145.38 = 815.94 : x
2. Step 2: Convert to fraction form
   2,763.32/4,145.38 = 815.94/x
3. Step 3: Cross multiply
   2,763.32x = 4,145.38 × 815.94
4. Step 4: Simplify right side
   2,763.32x = 3,382,379.32
5. Step 5: Solve for x
   x = 3,382,379.32/2,763.32
6. Step 6: Final answer
   x = 1,224.03