Finding the Fourth Proportional to 2,301.06, 3,178.67 and 2,215.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,301.06 : 3,178.67 = 2,215.73 : x
2. Step 2: Convert to fraction form
   2,301.06/3,178.67 = 2,215.73/x
3. Step 3: Cross multiply
   2,301.06x = 3,178.67 × 2,215.73
4. Step 4: Simplify right side
   2,301.06x = 7,043,047.51
5. Step 5: Solve for x
   x = 7,043,047.51/2,301.06
6. Step 6: Final answer
   x = 3,060.78