Finding the Fourth Proportional to 2,611.83, 3,917.17 and 1,225.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.83 : 3,917.17 = 1,225.79 : x
2. Step 2: Convert to fraction form
   2,611.83/3,917.17 = 1,225.79/x
3. Step 3: Cross multiply
   2,611.83x = 3,917.17 × 1,225.79
4. Step 4: Simplify right side
   2,611.83x = 4,801,627.81
5. Step 5: Solve for x
   x = 4,801,627.81/2,611.83
6. Step 6: Final answer
   x = 1,838.42