Finding the Fourth Proportional to 2,236.82, 3,338.31 and 2,178.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.82 : 3,338.31 = 2,178.50 : x
2. Step 2: Convert to fraction form
   2,236.82/3,338.31 = 2,178.50/x
3. Step 3: Cross multiply
   2,236.82x = 3,338.31 × 2,178.50
4. Step 4: Simplify right side
   2,236.82x = 7,272,499.81
5. Step 5: Solve for x
   x = 7,272,499.81/2,236.82
6. Step 6: Final answer
   x = 3,251.27