Finding the Fourth Proportional to 1,049.98, 1,448.88 and 607.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.98 : 1,448.88 = 607.91 : x
2. Step 2: Convert to fraction form
   1,049.98/1,448.88 = 607.91/x
3. Step 3: Cross multiply
   1,049.98x = 1,448.88 × 607.91
4. Step 4: Simplify right side
   1,049.98x = 880,792.26
5. Step 5: Solve for x
   x = 880,792.26/1,049.98
6. Step 6: Final answer
   x = 838.86