Finding the Fourth Proportional to 1,264.89, 1,746.59 and 871.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264.89 : 1,746.59 = 871.23 : x
2. Step 2: Convert to fraction form
   1,264.89/1,746.59 = 871.23/x
3. Step 3: Cross multiply
   1,264.89x = 1,746.59 × 871.23
4. Step 4: Simplify right side
   1,264.89x = 1,521,677.25
5. Step 5: Solve for x
   x = 1,521,677.25/1,264.89
6. Step 6: Final answer
   x = 1,203.01