Finding the Fourth Proportional to 1,510.30, 2,264.23 and 688.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.30 : 2,264.23 = 688.96 : x
2. Step 2: Convert to fraction form
   1,510.30/2,264.23 = 688.96/x
3. Step 3: Cross multiply
   1,510.30x = 2,264.23 × 688.96
4. Step 4: Simplify right side
   1,510.30x = 1,559,963.90
5. Step 5: Solve for x
   x = 1,559,963.90/1,510.30
6. Step 6: Final answer
   x = 1,032.88