Finding the Fourth Proportional to 1,510.25, 2,264.56 and 688.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.25 : 2,264.56 = 688.30 : x
2. Step 2: Convert to fraction form
   1,510.25/2,264.56 = 688.30/x
3. Step 3: Cross multiply
   1,510.25x = 2,264.56 × 688.30
4. Step 4: Simplify right side
   1,510.25x = 1,558,689.27
5. Step 5: Solve for x
   x = 1,558,689.27/1,510.25
6. Step 6: Final answer
   x = 1,032.08