Finding the Fourth Proportional to 1,074.72, 1,610.20 and 588.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.72 : 1,610.20 = 588.12 : x
2. Step 2: Convert to fraction form
   1,074.72/1,610.20 = 588.12/x
3. Step 3: Cross multiply
   1,074.72x = 1,610.20 × 588.12
4. Step 4: Simplify right side
   1,074.72x = 946,990.82
5. Step 5: Solve for x
   x = 946,990.82/1,074.72
6. Step 6: Final answer
   x = 881.15