Finding the Fourth Proportional to 1,012.48, 1,517.76 and 601.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.48 : 1,517.76 = 601.72 : x
2. Step 2: Convert to fraction form
   1,012.48/1,517.76 = 601.72/x
3. Step 3: Cross multiply
   1,012.48x = 1,517.76 × 601.72
4. Step 4: Simplify right side
   1,012.48x = 913,266.55
5. Step 5: Solve for x
   x = 913,266.55/1,012.48
6. Step 6: Final answer
   x = 902.01