Finding the Fourth Proportional to 1,012.30, 1,521.23 and 601.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.30 : 1,521.23 = 601.53 : x
2. Step 2: Convert to fraction form
   1,012.30/1,521.23 = 601.53/x
3. Step 3: Cross multiply
   1,012.30x = 1,521.23 × 601.53
4. Step 4: Simplify right side
   1,012.30x = 915,060.15
5. Step 5: Solve for x
   x = 915,060.15/1,012.30
6. Step 6: Final answer
   x = 903.94