Finding the Fourth Proportional to 2,852.67, 4,274.85 and 1,390.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,852.67 : 4,274.85 = 1,390.17 : x
2. Step 2: Convert to fraction form
   2,852.67/4,274.85 = 1,390.17/x
3. Step 3: Cross multiply
   2,852.67x = 4,274.85 × 1,390.17
4. Step 4: Simplify right side
   2,852.67x = 5,942,768.22
5. Step 5: Solve for x
   x = 5,942,768.22/2,852.67
6. Step 6: Final answer
   x = 2,083.23