Finding the Fourth Proportional to 1,045.16, 1,442.25 and 602.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.16 : 1,442.25 = 602.72 : x
2. Step 2: Convert to fraction form
   1,045.16/1,442.25 = 602.72/x
3. Step 3: Cross multiply
   1,045.16x = 1,442.25 × 602.72
4. Step 4: Simplify right side
   1,045.16x = 869,272.92
5. Step 5: Solve for x
   x = 869,272.92/1,045.16
6. Step 6: Final answer
   x = 831.71