Finding the Fourth Proportional to 1,049.90, 1,448.91 and 607.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.90 : 1,448.91 = 607.82 : x
2. Step 2: Convert to fraction form
   1,049.90/1,448.91 = 607.82/x
3. Step 3: Cross multiply
   1,049.90x = 1,448.91 × 607.82
4. Step 4: Simplify right side
   1,049.90x = 880,669.23
5. Step 5: Solve for x
   x = 880,669.23/1,049.90
6. Step 6: Final answer
   x = 838.82