Finding the Fourth Proportional to 1,100.18, 1,518.21 and 657.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.18 : 1,518.21 = 657.82 : x
2. Step 2: Convert to fraction form
   1,100.18/1,518.21 = 657.82/x
3. Step 3: Cross multiply
   1,100.18x = 1,518.21 × 657.82
4. Step 4: Simplify right side
   1,100.18x = 998,705.61
5. Step 5: Solve for x
   x = 998,705.61/1,100.18
6. Step 6: Final answer
   x = 907.77