Finding the Fourth Proportional to 1,641.34, 2,458.09 and 945.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.34 : 2,458.09 = 945.91 : x
2. Step 2: Convert to fraction form
   1,641.34/2,458.09 = 945.91/x
3. Step 3: Cross multiply
   1,641.34x = 2,458.09 × 945.91
4. Step 4: Simplify right side
   1,641.34x = 2,325,131.91
5. Step 5: Solve for x
   x = 2,325,131.91/1,641.34
6. Step 6: Final answer
   x = 1,416.61