Finding the Fourth Proportional to 1,531.43, 2,111.36 and 1,510.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.43 : 2,111.36 = 1,510.77 : x
2. Step 2: Convert to fraction form
   1,531.43/2,111.36 = 1,510.77/x
3. Step 3: Cross multiply
   1,531.43x = 2,111.36 × 1,510.77
4. Step 4: Simplify right side
   1,531.43x = 3,189,771.79
5. Step 5: Solve for x
   x = 3,189,771.79/1,531.43
6. Step 6: Final answer
   x = 2,082.88