Finding the Fourth Proportional to 2,077.39, 3,116.05 and 616.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.39 : 3,116.05 = 616.55 : x
2. Step 2: Convert to fraction form
   2,077.39/3,116.05 = 616.55/x
3. Step 3: Cross multiply
   2,077.39x = 3,116.05 × 616.55
4. Step 4: Simplify right side
   2,077.39x = 1,921,206.88
5. Step 5: Solve for x
   x = 1,921,206.88/2,077.39
6. Step 6: Final answer
   x = 924.82