Finding the Fourth Proportional to 1,857.76, 2,781.52 and 1,510.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.76 : 2,781.52 = 1,510.28 : x
2. Step 2: Convert to fraction form
   1,857.76/2,781.52 = 1,510.28/x
3. Step 3: Cross multiply
   1,857.76x = 2,781.52 × 1,510.28
4. Step 4: Simplify right side
   1,857.76x = 4,200,874.03
5. Step 5: Solve for x
   x = 4,200,874.03/1,857.76
6. Step 6: Final answer
   x = 2,261.26