Finding the Fourth Proportional to 1,059.12, 1,462.31 and 660.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.12 : 1,462.31 = 660.94 : x
2. Step 2: Convert to fraction form
   1,059.12/1,462.31 = 660.94/x
3. Step 3: Cross multiply
   1,059.12x = 1,462.31 × 660.94
4. Step 4: Simplify right side
   1,059.12x = 966,499.17
5. Step 5: Solve for x
   x = 966,499.17/1,059.12
6. Step 6: Final answer
   x = 912.55