Finding the Fourth Proportional to 1,510.70, 2,085.39 and 881.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.70 : 2,085.39 = 881.82 : x
2. Step 2: Convert to fraction form
   1,510.70/2,085.39 = 881.82/x
3. Step 3: Cross multiply
   1,510.70x = 2,085.39 × 881.82
4. Step 4: Simplify right side
   1,510.70x = 1,838,938.61
5. Step 5: Solve for x
   x = 1,838,938.61/1,510.70
6. Step 6: Final answer
   x = 1,217.28