Finding the Fourth Proportional to 1,062.55, 1,466.20 and 664.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.55 : 1,466.20 = 664.53 : x
2. Step 2: Convert to fraction form
   1,062.55/1,466.20 = 664.53/x
3. Step 3: Cross multiply
   1,062.55x = 1,466.20 × 664.53
4. Step 4: Simplify right side
   1,062.55x = 974,333.89
5. Step 5: Solve for x
   x = 974,333.89/1,062.55
6. Step 6: Final answer
   x = 916.98