Finding the Fourth Proportional to 1,049.82, 1,448.72 and 607.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.82 : 1,448.72 = 607.72 : x
2. Step 2: Convert to fraction form
   1,049.82/1,448.72 = 607.72/x
3. Step 3: Cross multiply
   1,049.82x = 1,448.72 × 607.72
4. Step 4: Simplify right side
   1,049.82x = 880,416.12
5. Step 5: Solve for x
   x = 880,416.12/1,049.82
6. Step 6: Final answer
   x = 838.64