Finding the Fourth Proportional to 2,818.86, 4,224.60 and 1,259.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.86 : 4,224.60 = 1,259.34 : x
2. Step 2: Convert to fraction form
   2,818.86/4,224.60 = 1,259.34/x
3. Step 3: Cross multiply
   2,818.86x = 4,224.60 × 1,259.34
4. Step 4: Simplify right side
   2,818.86x = 5,320,207.76
5. Step 5: Solve for x
   x = 5,320,207.76/2,818.86
6. Step 6: Final answer
   x = 1,887.36