Finding the Fourth Proportional to 2,271.24, 3,405.78 and 790.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.24 : 3,405.78 = 790.16 : x
2. Step 2: Convert to fraction form
   2,271.24/3,405.78 = 790.16/x
3. Step 3: Cross multiply
   2,271.24x = 3,405.78 × 790.16
4. Step 4: Simplify right side
   2,271.24x = 2,691,094.10
5. Step 5: Solve for x
   x = 2,691,094.10/2,271.24
6. Step 6: Final answer
   x = 1,184.86