Finding the Fourth Proportional to 1,510.32, 2,266.16 and 816.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.32 : 2,266.16 = 816.25 : x
2. Step 2: Convert to fraction form
   1,510.32/2,266.16 = 816.25/x
3. Step 3: Cross multiply
   1,510.32x = 2,266.16 × 816.25
4. Step 4: Simplify right side
   1,510.32x = 1,849,753.10
5. Step 5: Solve for x
   x = 1,849,753.10/1,510.32
6. Step 6: Final answer
   x = 1,224.74