Finding the Fourth Proportional to 2,069.59, 3,103.99 and 608.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.59 : 3,103.99 = 608.40 : x
2. Step 2: Convert to fraction form
   2,069.59/3,103.99 = 608.40/x
3. Step 3: Cross multiply
   2,069.59x = 3,103.99 × 608.40
4. Step 4: Simplify right side
   2,069.59x = 1,888,467.52
5. Step 5: Solve for x
   x = 1,888,467.52/2,069.59
6. Step 6: Final answer
   x = 912.48