Finding the Fourth Proportional to 2,077.86, 3,116.72 and 617.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.86 : 3,116.72 = 617.02 : x
2. Step 2: Convert to fraction form
   2,077.86/3,116.72 = 617.02/x
3. Step 3: Cross multiply
   2,077.86x = 3,116.72 × 617.02
4. Step 4: Simplify right side
   2,077.86x = 1,923,078.57
5. Step 5: Solve for x
   x = 1,923,078.57/2,077.86
6. Step 6: Final answer
   x = 925.51