Finding the Fourth Proportional to 1,921.98, 2,879.37 and 945.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.98 : 2,879.37 = 945.18 : x
2. Step 2: Convert to fraction form
   1,921.98/2,879.37 = 945.18/x
3. Step 3: Cross multiply
   1,921.98x = 2,879.37 × 945.18
4. Step 4: Simplify right side
   1,921.98x = 2,721,522.94
5. Step 5: Solve for x
   x = 2,721,522.94/1,921.98
6. Step 6: Final answer
   x = 1,416.00