Finding the Fourth Proportional to 1,154.38, 1,730.12 and 577.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154.38 : 1,730.12 = 577.42 : x
2. Step 2: Convert to fraction form
   1,154.38/1,730.12 = 577.42/x
3. Step 3: Cross multiply
   1,154.38x = 1,730.12 × 577.42
4. Step 4: Simplify right side
   1,154.38x = 999,005.89
5. Step 5: Solve for x
   x = 999,005.89/1,154.38
6. Step 6: Final answer
   x = 865.40