Finding the Fourth Proportional to 1,468.79, 2,026.78 and 879.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,468.79 : 2,026.78 = 879.31 : x
2. Step 2: Convert to fraction form
   1,468.79/2,026.78 = 879.31/x
3. Step 3: Cross multiply
   1,468.79x = 2,026.78 × 879.31
4. Step 4: Simplify right side
   1,468.79x = 1,782,167.92
5. Step 5: Solve for x
   x = 1,782,167.92/1,468.79
6. Step 6: Final answer
   x = 1,213.36