Finding the Fourth Proportional to 2,074.93, 3,111.91 and 613.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.93 : 3,111.91 = 613.73 : x
2. Step 2: Convert to fraction form
   2,074.93/3,111.91 = 613.73/x
3. Step 3: Cross multiply
   2,074.93x = 3,111.91 × 613.73
4. Step 4: Simplify right side
   2,074.93x = 1,909,872.52
5. Step 5: Solve for x
   x = 1,909,872.52/2,074.93
6. Step 6: Final answer
   x = 920.45