Finding the Fourth Proportional to 1,066.47, 1,471.41 and 693.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.47 : 1,471.41 = 693.87 : x
2. Step 2: Convert to fraction form
   1,066.47/1,471.41 = 693.87/x
3. Step 3: Cross multiply
   1,066.47x = 1,471.41 × 693.87
4. Step 4: Simplify right side
   1,066.47x = 1,020,967.26
5. Step 5: Solve for x
   x = 1,020,967.26/1,066.47
6. Step 6: Final answer
   x = 957.33