Finding the Fourth Proportional to 1,665.91, 2,298.19 and 966.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.91 : 2,298.19 = 966.88 : x
2. Step 2: Convert to fraction form
   1,665.91/2,298.19 = 966.88/x
3. Step 3: Cross multiply
   1,665.91x = 2,298.19 × 966.88
4. Step 4: Simplify right side
   1,665.91x = 2,222,060.04
5. Step 5: Solve for x
   x = 2,222,060.04/1,665.91
6. Step 6: Final answer
   x = 1,333.85