Finding the Fourth Proportional to 1,008.02, 1,510.20 and 617.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.02 : 1,510.20 = 617.82 : x
2. Step 2: Convert to fraction form
   1,008.02/1,510.20 = 617.82/x
3. Step 3: Cross multiply
   1,008.02x = 1,510.20 × 617.82
4. Step 4: Simplify right side
   1,008.02x = 933,031.76
5. Step 5: Solve for x
   x = 933,031.76/1,008.02
6. Step 6: Final answer
   x = 925.61