Finding the Fourth Proportional to 2,613.08, 3,917.78 and 1,225.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.08 : 3,917.78 = 1,225.68 : x
2. Step 2: Convert to fraction form
   2,613.08/3,917.78 = 1,225.68/x
3. Step 3: Cross multiply
   2,613.08x = 3,917.78 × 1,225.68
4. Step 4: Simplify right side
   2,613.08x = 4,801,944.59
5. Step 5: Solve for x
   x = 4,801,944.59/2,613.08
6. Step 6: Final answer
   x = 1,837.66