Finding the Fourth Proportional to 2,074.08, 3,111.63 and 613.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.08 : 3,111.63 = 613.23 : x
2. Step 2: Convert to fraction form
   2,074.08/3,111.63 = 613.23/x
3. Step 3: Cross multiply
   2,074.08x = 3,111.63 × 613.23
4. Step 4: Simplify right side
   2,074.08x = 1,908,144.86
5. Step 5: Solve for x
   x = 1,908,144.86/2,074.08
6. Step 6: Final answer
   x = 920.00