Finding the Fourth Proportional to 2,150.25, 2,967.89 and 1,311.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.25 : 2,967.89 = 1,311.51 : x
2. Step 2: Convert to fraction form
   2,150.25/2,967.89 = 1,311.51/x
3. Step 3: Cross multiply
   2,150.25x = 2,967.89 × 1,311.51
4. Step 4: Simplify right side
   2,150.25x = 3,892,412.67
5. Step 5: Solve for x
   x = 3,892,412.67/2,150.25
6. Step 6: Final answer
   x = 1,810.22