Finding the Fourth Proportional to 2,034.86, 3,051.89 and 648.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,034.86 : 3,051.89 = 648.20 : x
2. Step 2: Convert to fraction form
   2,034.86/3,051.89 = 648.20/x
3. Step 3: Cross multiply
   2,034.86x = 3,051.89 × 648.20
4. Step 4: Simplify right side
   2,034.86x = 1,978,216.60
5. Step 5: Solve for x
   x = 1,978,216.60/2,034.86
6. Step 6: Final answer
   x = 972.17