Finding the Fourth Proportional to 1,156.89, 1,734.05 and 540.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.89 : 1,734.05 = 540.75 : x
2. Step 2: Convert to fraction form
   1,156.89/1,734.05 = 540.75/x
3. Step 3: Cross multiply
   1,156.89x = 1,734.05 × 540.75
4. Step 4: Simplify right side
   1,156.89x = 937,684.83
5. Step 5: Solve for x
   x = 937,684.83/1,156.89
6. Step 6: Final answer
   x = 810.52