Finding the Fourth Proportional to 2,180.69, 3,009.29 and 1,284.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.69 : 3,009.29 = 1,284.53 : x
2. Step 2: Convert to fraction form
   2,180.69/3,009.29 = 1,284.53/x
3. Step 3: Cross multiply
   2,180.69x = 3,009.29 × 1,284.53
4. Step 4: Simplify right side
   2,180.69x = 3,865,511.45
5. Step 5: Solve for x
   x = 3,865,511.45/2,180.69
6. Step 6: Final answer
   x = 1,772.61