Finding the Fourth Proportional to 2,188.82, 3,280.61 and 1,262.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.82 : 3,280.61 = 1,262.46 : x
2. Step 2: Convert to fraction form
   2,188.82/3,280.61 = 1,262.46/x
3. Step 3: Cross multiply
   2,188.82x = 3,280.61 × 1,262.46
4. Step 4: Simplify right side
   2,188.82x = 4,141,632.59
5. Step 5: Solve for x
   x = 4,141,632.59/2,188.82
6. Step 6: Final answer
   x = 1,892.18