Finding the Fourth Proportional to 1,049.24, 1,447.89 and 607.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.24 : 1,447.89 = 607.20 : x
2. Step 2: Convert to fraction form
   1,049.24/1,447.89 = 607.20/x
3. Step 3: Cross multiply
   1,049.24x = 1,447.89 × 607.20
4. Step 4: Simplify right side
   1,049.24x = 879,158.81
5. Step 5: Solve for x
   x = 879,158.81/1,049.24
6. Step 6: Final answer
   x = 837.90