Finding the Fourth Proportional to 1,661.80, 2,487.86 and 966.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.80 : 2,487.86 = 966.34 : x
2. Step 2: Convert to fraction form
   1,661.80/2,487.86 = 966.34/x
3. Step 3: Cross multiply
   1,661.80x = 2,487.86 × 966.34
4. Step 4: Simplify right side
   1,661.80x = 2,404,118.63
5. Step 5: Solve for x
   x = 2,404,118.63/1,661.80
6. Step 6: Final answer
   x = 1,446.70