Finding the Fourth Proportional to 1,093.40, 1,510.82 and 874.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.40 : 1,510.82 = 874.16 : x
2. Step 2: Convert to fraction form
   1,093.40/1,510.82 = 874.16/x
3. Step 3: Cross multiply
   1,093.40x = 1,510.82 × 874.16
4. Step 4: Simplify right side
   1,093.40x = 1,320,686.49
5. Step 5: Solve for x
   x = 1,320,686.49/1,093.40
6. Step 6: Final answer
   x = 1,207.88