Finding the Fourth Proportional to 1,531.50, 2,112.82 and 1,198.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.50 : 2,112.82 = 1,198.59 : x
2. Step 2: Convert to fraction form
   1,531.50/2,112.82 = 1,198.59/x
3. Step 3: Cross multiply
   1,531.50x = 2,112.82 × 1,198.59
4. Step 4: Simplify right side
   1,531.50x = 2,532,398.93
5. Step 5: Solve for x
   x = 2,532,398.93/1,531.50
6. Step 6: Final answer
   x = 1,653.54