Finding the Fourth Proportional to 2,151.10, 3,222.48 and 1,259.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.10 : 3,222.48 = 1,259.48 : x
2. Step 2: Convert to fraction form
   2,151.10/3,222.48 = 1,259.48/x
3. Step 3: Cross multiply
   2,151.10x = 3,222.48 × 1,259.48
4. Step 4: Simplify right side
   2,151.10x = 4,058,633.00
5. Step 5: Solve for x
   x = 4,058,633.00/2,151.10
6. Step 6: Final answer
   x = 1,886.77