Finding the Fourth Proportional to 1,436.07, 2,156.13 and 743.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.07 : 2,156.13 = 743.25 : x
2. Step 2: Convert to fraction form
   1,436.07/2,156.13 = 743.25/x
3. Step 3: Cross multiply
   1,436.07x = 2,156.13 × 743.25
4. Step 4: Simplify right side
   1,436.07x = 1,602,543.62
5. Step 5: Solve for x
   x = 1,602,543.62/1,436.07
6. Step 6: Final answer
   x = 1,115.92