Finding the Fourth Proportional to 1,100.70, 1,651.05 and 663.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.70 : 1,651.05 = 663.30 : x
2. Step 2: Convert to fraction form
   1,100.70/1,651.05 = 663.30/x
3. Step 3: Cross multiply
   1,100.70x = 1,651.05 × 663.30
4. Step 4: Simplify right side
   1,100.70x = 1,095,141.47
5. Step 5: Solve for x
   x = 1,095,141.47/1,100.70
6. Step 6: Final answer
   x = 994.95