Finding the Fourth Proportional to 1,093.68, 1,510.86 and 872.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.68 : 1,510.86 = 872.34 : x
2. Step 2: Convert to fraction form
   1,093.68/1,510.86 = 872.34/x
3. Step 3: Cross multiply
   1,093.68x = 1,510.86 × 872.34
4. Step 4: Simplify right side
   1,093.68x = 1,317,983.61
5. Step 5: Solve for x
   x = 1,317,983.61/1,093.68
6. Step 6: Final answer
   x = 1,205.09