Finding the Fourth Proportional to 2,069.55, 3,104.39 and 608.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.55 : 3,104.39 = 608.78 : x
2. Step 2: Convert to fraction form
   2,069.55/3,104.39 = 608.78/x
3. Step 3: Cross multiply
   2,069.55x = 3,104.39 × 608.78
4. Step 4: Simplify right side
   2,069.55x = 1,889,899.83
5. Step 5: Solve for x
   x = 1,889,899.83/2,069.55
6. Step 6: Final answer
   x = 913.19