Finding the Fourth Proportional to 1,066.53, 1,598.88 and 871.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.53 : 1,598.88 = 871.53 : x
2. Step 2: Convert to fraction form
   1,066.53/1,598.88 = 871.53/x
3. Step 3: Cross multiply
   1,066.53x = 1,598.88 × 871.53
4. Step 4: Simplify right side
   1,066.53x = 1,393,471.89
5. Step 5: Solve for x
   x = 1,393,471.89/1,066.53
6. Step 6: Final answer
   x = 1,306.55