Finding the Fourth Proportional to 2,077.57, 3,115.83 and 616.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.57 : 3,115.83 = 616.39 : x
2. Step 2: Convert to fraction form
   2,077.57/3,115.83 = 616.39/x
3. Step 3: Cross multiply
   2,077.57x = 3,115.83 × 616.39
4. Step 4: Simplify right side
   2,077.57x = 1,920,547.79
5. Step 5: Solve for x
   x = 1,920,547.79/2,077.57
6. Step 6: Final answer
   x = 924.42