Finding the Fourth Proportional to 1,826.28, 2,519.82 and 1,236.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.28 : 2,519.82 = 1,236.60 : x
2. Step 2: Convert to fraction form
   1,826.28/2,519.82 = 1,236.60/x
3. Step 3: Cross multiply
   1,826.28x = 2,519.82 × 1,236.60
4. Step 4: Simplify right side
   1,826.28x = 3,116,009.41
5. Step 5: Solve for x
   x = 3,116,009.41/1,826.28
6. Step 6: Final answer
   x = 1,706.21