Finding the Fourth Proportional to 1,616.55, 2,422.80 and 793.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.55 : 2,422.80 = 793.05 : x
2. Step 2: Convert to fraction form
   1,616.55/2,422.80 = 793.05/x
3. Step 3: Cross multiply
   1,616.55x = 2,422.80 × 793.05
4. Step 4: Simplify right side
   1,616.55x = 1,921,401.54
5. Step 5: Solve for x
   x = 1,921,401.54/1,616.55
6. Step 6: Final answer
   x = 1,188.58