Finding the Fourth Proportional to 2,074.02, 3,111.24 and 613.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.02 : 3,111.24 = 613.59 : x
2. Step 2: Convert to fraction form
   2,074.02/3,111.24 = 613.59/x
3. Step 3: Cross multiply
   2,074.02x = 3,111.24 × 613.59
4. Step 4: Simplify right side
   2,074.02x = 1,909,025.75
5. Step 5: Solve for x
   x = 1,909,025.75/2,074.02
6. Step 6: Final answer
   x = 920.45