Finding the Fourth Proportional to 1,978.25, 2,950.17 and 1,951.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.25 : 2,950.17 = 1,951.77 : x
2. Step 2: Convert to fraction form
   1,978.25/2,950.17 = 1,951.77/x
3. Step 3: Cross multiply
   1,978.25x = 2,950.17 × 1,951.77
4. Step 4: Simplify right side
   1,978.25x = 5,758,053.30
5. Step 5: Solve for x
   x = 5,758,053.30/1,978.25
6. Step 6: Final answer
   x = 2,910.69