Finding the Fourth Proportional to 2,178.76, 3,005.32 and 1,293.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.76 : 3,005.32 = 1,293.94 : x
2. Step 2: Convert to fraction form
   2,178.76/3,005.32 = 1,293.94/x
3. Step 3: Cross multiply
   2,178.76x = 3,005.32 × 1,293.94
4. Step 4: Simplify right side
   2,178.76x = 3,888,703.76
5. Step 5: Solve for x
   x = 3,888,703.76/2,178.76
6. Step 6: Final answer
   x = 1,784.82