Finding the Fourth Proportional to 1,066.57, 1,470.96 and 693.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.57 : 1,470.96 = 693.36 : x
2. Step 2: Convert to fraction form
   1,066.57/1,470.96 = 693.36/x
3. Step 3: Cross multiply
   1,066.57x = 1,470.96 × 693.36
4. Step 4: Simplify right side
   1,066.57x = 1,019,904.83
5. Step 5: Solve for x
   x = 1,019,904.83/1,066.57
6. Step 6: Final answer
   x = 956.25