Finding the Fourth Proportional to 2,074.82, 3,112.22 and 613.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.82 : 3,112.22 = 613.98 : x
2. Step 2: Convert to fraction form
   2,074.82/3,112.22 = 613.98/x
3. Step 3: Cross multiply
   2,074.82x = 3,112.22 × 613.98
4. Step 4: Simplify right side
   2,074.82x = 1,910,842.37
5. Step 5: Solve for x
   x = 1,910,842.37/2,074.82
6. Step 6: Final answer
   x = 920.97