Finding the Fourth Proportional to 1,066.28, 1,470.96 and 693.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.28 : 1,470.96 = 693.59 : x
2. Step 2: Convert to fraction form
   1,066.28/1,470.96 = 693.59/x
3. Step 3: Cross multiply
   1,066.28x = 1,470.96 × 693.59
4. Step 4: Simplify right side
   1,066.28x = 1,020,235.79
5. Step 5: Solve for x
   x = 1,020,235.79/1,066.28
6. Step 6: Final answer
   x = 956.82