Finding the Fourth Proportional to 2,178.01, 3,005.70 and 1,293.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.01 : 3,005.70 = 1,293.81 : x
2. Step 2: Convert to fraction form
   2,178.01/3,005.70 = 1,293.81/x
3. Step 3: Cross multiply
   2,178.01x = 3,005.70 × 1,293.81
4. Step 4: Simplify right side
   2,178.01x = 3,888,798.25
5. Step 5: Solve for x
   x = 3,888,798.25/2,178.01
6. Step 6: Final answer
   x = 1,785.49