Finding the Fourth Proportional to 2,275.72, 3,419.68 and 1,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.72 : 3,419.68 = 1,236.50 : x
2. Step 2: Convert to fraction form
   2,275.72/3,419.68 = 1,236.50/x
3. Step 3: Cross multiply
   2,275.72x = 3,419.68 × 1,236.50
4. Step 4: Simplify right side
   2,275.72x = 4,228,434.32
5. Step 5: Solve for x
   x = 4,228,434.32/2,275.72
6. Step 6: Final answer
   x = 1,858.06