Finding the Fourth Proportional to 1,510.47, 2,083.59 and 1,231.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.47 : 2,083.59 = 1,231.02 : x
2. Step 2: Convert to fraction form
   1,510.47/2,083.59 = 1,231.02/x
3. Step 3: Cross multiply
   1,510.47x = 2,083.59 × 1,231.02
4. Step 4: Simplify right side
   1,510.47x = 2,564,940.96
5. Step 5: Solve for x
   x = 2,564,940.96/1,510.47
6. Step 6: Final answer
   x = 1,698.11