Finding the Fourth Proportional to 1,156.39, 1,734.72 and 540.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.39 : 1,734.72 = 540.25 : x
2. Step 2: Convert to fraction form
   1,156.39/1,734.72 = 540.25/x
3. Step 3: Cross multiply
   1,156.39x = 1,734.72 × 540.25
4. Step 4: Simplify right side
   1,156.39x = 937,182.48
5. Step 5: Solve for x
   x = 937,182.48/1,156.39
6. Step 6: Final answer
   x = 810.44