Finding the Fourth Proportional to 1,951.78, 2,693.78 and 1,166.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,951.78 : 2,693.78 = 1,166.30 : x
2. Step 2: Convert to fraction form
   1,951.78/2,693.78 = 1,166.30/x
3. Step 3: Cross multiply
   1,951.78x = 2,693.78 × 1,166.30
4. Step 4: Simplify right side
   1,951.78x = 3,141,755.61
5. Step 5: Solve for x
   x = 3,141,755.61/1,951.78
6. Step 6: Final answer
   x = 1,609.69