Finding the Fourth Proportional to 1,510.31, 2,084.13 and 881.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.31 : 2,084.13 = 881.15 : x
2. Step 2: Convert to fraction form
   1,510.31/2,084.13 = 881.15/x
3. Step 3: Cross multiply
   1,510.31x = 2,084.13 × 881.15
4. Step 4: Simplify right side
   1,510.31x = 1,836,420.73
5. Step 5: Solve for x
   x = 1,836,420.73/1,510.31
6. Step 6: Final answer
   x = 1,215.92