Finding the Fourth Proportional to 2,905.56, 4,010.58 and 1,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,905.56 : 4,010.58 = 1,962.72 : x
2. Step 2: Convert to fraction form
   2,905.56/4,010.58 = 1,962.72/x
3. Step 3: Cross multiply
   2,905.56x = 4,010.58 × 1,962.72
4. Step 4: Simplify right side
   2,905.56x = 7,871,645.58
5. Step 5: Solve for x
   x = 7,871,645.58/2,905.56
6. Step 6: Final answer
   x = 2,709.17