Finding the Fourth Proportional to 1,436.42, 2,155.84 and 743.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.42 : 2,155.84 = 743.52 : x
2. Step 2: Convert to fraction form
   1,436.42/2,155.84 = 743.52/x
3. Step 3: Cross multiply
   1,436.42x = 2,155.84 × 743.52
4. Step 4: Simplify right side
   1,436.42x = 1,602,910.16
5. Step 5: Solve for x
   x = 1,602,910.16/1,436.42
6. Step 6: Final answer
   x = 1,115.91