Finding the Fourth Proportional to 2,074.16, 3,111.55 and 613.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.16 : 3,111.55 = 613.37 : x
2. Step 2: Convert to fraction form
   2,074.16/3,111.55 = 613.37/x
3. Step 3: Cross multiply
   2,074.16x = 3,111.55 × 613.37
4. Step 4: Simplify right side
   2,074.16x = 1,908,514.33
5. Step 5: Solve for x
   x = 1,908,514.33/2,074.16
6. Step 6: Final answer
   x = 920.14