Finding the Fourth Proportional to 2,034.78, 3,051.97 and 648.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,034.78 : 3,051.97 = 648.15 : x
2. Step 2: Convert to fraction form
   2,034.78/3,051.97 = 648.15/x
3. Step 3: Cross multiply
   2,034.78x = 3,051.97 × 648.15
4. Step 4: Simplify right side
   2,034.78x = 1,978,134.36
5. Step 5: Solve for x
   x = 1,978,134.36/2,034.78
6. Step 6: Final answer
   x = 972.16