Finding the Fourth Proportional to 2,611.81, 3,917.52 and 1,225.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.81 : 3,917.52 = 1,225.46 : x
2. Step 2: Convert to fraction form
   2,611.81/3,917.52 = 1,225.46/x
3. Step 3: Cross multiply
   2,611.81x = 3,917.52 × 1,225.46
4. Step 4: Simplify right side
   2,611.81x = 4,800,761.46
5. Step 5: Solve for x
   x = 4,800,761.46/2,611.81
6. Step 6: Final answer
   x = 1,838.10