Finding the Fourth Proportional to 1,066.42, 1,471.71 and 803.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.42 : 1,471.71 = 803.98 : x
2. Step 2: Convert to fraction form
   1,066.42/1,471.71 = 803.98/x
3. Step 3: Cross multiply
   1,066.42x = 1,471.71 × 803.98
4. Step 4: Simplify right side
   1,066.42x = 1,183,225.41
5. Step 5: Solve for x
   x = 1,183,225.41/1,066.42
6. Step 6: Final answer
   x = 1,109.53