Finding the Fourth Proportional to 1,059.53, 1,462.39 and 661.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.53 : 1,462.39 = 661.41 : x
2. Step 2: Convert to fraction form
   1,059.53/1,462.39 = 661.41/x
3. Step 3: Cross multiply
   1,059.53x = 1,462.39 × 661.41
4. Step 4: Simplify right side
   1,059.53x = 967,237.72
5. Step 5: Solve for x
   x = 967,237.72/1,059.53
6. Step 6: Final answer
   x = 912.90