Finding the Fourth Proportional to 2,150.67, 3,223.35 and 1,272.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.67 : 3,223.35 = 1,272.30 : x
2. Step 2: Convert to fraction form
   2,150.67/3,223.35 = 1,272.30/x
3. Step 3: Cross multiply
   2,150.67x = 3,223.35 × 1,272.30
4. Step 4: Simplify right side
   2,150.67x = 4,101,068.21
5. Step 5: Solve for x
   x = 4,101,068.21/2,150.67
6. Step 6: Final answer
   x = 1,906.88