Finding the Fourth Proportional to 2,764.63, 4,147.61 and 790.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.63 : 4,147.61 = 790.29 : x
2. Step 2: Convert to fraction form
   2,764.63/4,147.61 = 790.29/x
3. Step 3: Cross multiply
   2,764.63x = 4,147.61 × 790.29
4. Step 4: Simplify right side
   2,764.63x = 3,277,810.76
5. Step 5: Solve for x
   x = 3,277,810.76/2,764.63
6. Step 6: Final answer
   x = 1,185.62