Finding the Fourth Proportional to 1,531.32, 2,112.62 and 940.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.32 : 2,112.62 = 940.83 : x
2. Step 2: Convert to fraction form
   1,531.32/2,112.62 = 940.83/x
3. Step 3: Cross multiply
   1,531.32x = 2,112.62 × 940.83
4. Step 4: Simplify right side
   1,531.32x = 1,987,611.57
5. Step 5: Solve for x
   x = 1,987,611.57/1,531.32
6. Step 6: Final answer
   x = 1,297.97