Finding the Fourth Proportional to 1,049.57, 1,448.50 and 607.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.57 : 1,448.50 = 607.49 : x
2. Step 2: Convert to fraction form
   1,049.57/1,448.50 = 607.49/x
3. Step 3: Cross multiply
   1,049.57x = 1,448.50 × 607.49
4. Step 4: Simplify right side
   1,049.57x = 879,940.50
5. Step 5: Solve for x
   x = 879,940.50/1,049.57
6. Step 6: Final answer
   x = 838.38