Finding the Fourth Proportional to 2,271.98, 3,406.58 and 790.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.98 : 3,406.58 = 790.86 : x
2. Step 2: Convert to fraction form
   2,271.98/3,406.58 = 790.86/x
3. Step 3: Cross multiply
   2,271.98x = 3,406.58 × 790.86
4. Step 4: Simplify right side
   2,271.98x = 2,694,123.90
5. Step 5: Solve for x
   x = 2,694,123.90/2,271.98
6. Step 6: Final answer
   x = 1,185.81