Finding the Fourth Proportional to 1,026.72, 1,538.06 and 966.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.72 : 1,538.06 = 966.78 : x
2. Step 2: Convert to fraction form
   1,026.72/1,538.06 = 966.78/x
3. Step 3: Cross multiply
   1,026.72x = 1,538.06 × 966.78
4. Step 4: Simplify right side
   1,026.72x = 1,486,960.81
5. Step 5: Solve for x
   x = 1,486,960.81/1,026.72
6. Step 6: Final answer
   x = 1,448.26