Finding the Fourth Proportional to 2,034.37, 3,051.71 and 647.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,034.37 : 3,051.71 = 647.78 : x
2. Step 2: Convert to fraction form
   2,034.37/3,051.71 = 647.78/x
3. Step 3: Cross multiply
   2,034.37x = 3,051.71 × 647.78
4. Step 4: Simplify right side
   2,034.37x = 1,976,836.70
5. Step 5: Solve for x
   x = 1,976,836.70/2,034.37
6. Step 6: Final answer
   x = 971.72