Finding the Fourth Proportional to 1,066.38, 1,589.30 and 1,064.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.38 : 1,589.30 = 1,064.76 : x
2. Step 2: Convert to fraction form
   1,066.38/1,589.30 = 1,064.76/x
3. Step 3: Cross multiply
   1,066.38x = 1,589.30 × 1,064.76
4. Step 4: Simplify right side
   1,066.38x = 1,692,217.74
5. Step 5: Solve for x
   x = 1,692,217.74/1,066.38
6. Step 6: Final answer
   x = 1,586.88