Finding the Fourth Proportional to 1,531.67, 2,113.69 and 833.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.67 : 2,113.69 = 833.05 : x
2. Step 2: Convert to fraction form
   1,531.67/2,113.69 = 833.05/x
3. Step 3: Cross multiply
   1,531.67x = 2,113.69 × 833.05
4. Step 4: Simplify right side
   1,531.67x = 1,760,798.89
5. Step 5: Solve for x
   x = 1,760,798.89/1,531.67
6. Step 6: Final answer
   x = 1,149.59