Finding the Fourth Proportional to 1,018.35, 1,525.56 and 607.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.35 : 1,525.56 = 607.82 : x
2. Step 2: Convert to fraction form
   1,018.35/1,525.56 = 607.82/x
3. Step 3: Cross multiply
   1,018.35x = 1,525.56 × 607.82
4. Step 4: Simplify right side
   1,018.35x = 927,258.25
5. Step 5: Solve for x
   x = 927,258.25/1,018.35
6. Step 6: Final answer
   x = 910.55