Finding the Fourth Proportional to 1,066.50, 1,470.76 and 693.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.50 : 1,470.76 = 693.77 : x
2. Step 2: Convert to fraction form
   1,066.50/1,470.76 = 693.77/x
3. Step 3: Cross multiply
   1,066.50x = 1,470.76 × 693.77
4. Step 4: Simplify right side
   1,066.50x = 1,020,360.08
5. Step 5: Solve for x
   x = 1,020,360.08/1,066.50
6. Step 6: Final answer
   x = 956.74