Finding the Fourth Proportional to 1,531.70, 2,113.72 and 833.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.70 : 2,113.72 = 833.07 : x
2. Step 2: Convert to fraction form
   1,531.70/2,113.72 = 833.07/x
3. Step 3: Cross multiply
   1,531.70x = 2,113.72 × 833.07
4. Step 4: Simplify right side
   1,531.70x = 1,760,876.72
5. Step 5: Solve for x
   x = 1,760,876.72/1,531.70
6. Step 6: Final answer
   x = 1,149.62