Finding the Fourth Proportional to 1,510.58, 2,264.20 and 815.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.58 : 2,264.20 = 815.52 : x
2. Step 2: Convert to fraction form
   1,510.58/2,264.20 = 815.52/x
3. Step 3: Cross multiply
   1,510.58x = 2,264.20 × 815.52
4. Step 4: Simplify right side
   1,510.58x = 1,846,500.38
5. Step 5: Solve for x
   x = 1,846,500.38/1,510.58
6. Step 6: Final answer
   x = 1,222.38