Finding the Fourth Proportional to 2,077.30, 3,116.55 and 616.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.30 : 3,116.55 = 616.48 : x
2. Step 2: Convert to fraction form
   2,077.30/3,116.55 = 616.48/x
3. Step 3: Cross multiply
   2,077.30x = 3,116.55 × 616.48
4. Step 4: Simplify right side
   2,077.30x = 1,921,290.74
5. Step 5: Solve for x
   x = 1,921,290.74/2,077.30
6. Step 6: Final answer
   x = 924.90