Finding the Fourth Proportional to 1,066.06, 1,471.59 and 693.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.06 : 1,471.59 = 693.36 : x
2. Step 2: Convert to fraction form
   1,066.06/1,471.59 = 693.36/x
3. Step 3: Cross multiply
   1,066.06x = 1,471.59 × 693.36
4. Step 4: Simplify right side
   1,066.06x = 1,020,343.59
5. Step 5: Solve for x
   x = 1,020,343.59/1,066.06
6. Step 6: Final answer
   x = 957.12