Finding the Fourth Proportional to 1,965.25, 2,948.63 and 666.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.25 : 2,948.63 = 666.72 : x
2. Step 2: Convert to fraction form
   1,965.25/2,948.63 = 666.72/x
3. Step 3: Cross multiply
   1,965.25x = 2,948.63 × 666.72
4. Step 4: Simplify right side
   1,965.25x = 1,965,910.59
5. Step 5: Solve for x
   x = 1,965,910.59/1,965.25
6. Step 6: Final answer
   x = 1,000.34