Finding the Fourth Proportional to 1,152.38, 1,725.82 and 663.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.38 : 1,725.82 = 663.95 : x
2. Step 2: Convert to fraction form
   1,152.38/1,725.82 = 663.95/x
3. Step 3: Cross multiply
   1,152.38x = 1,725.82 × 663.95
4. Step 4: Simplify right side
   1,152.38x = 1,145,847.90
5. Step 5: Solve for x
   x = 1,145,847.90/1,152.38
6. Step 6: Final answer
   x = 994.34