Finding the Fourth Proportional to 3,145.95, 4,717.32 and 1,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.95 : 4,717.32 = 1,171.50 : x
2. Step 2: Convert to fraction form
   3,145.95/4,717.32 = 1,171.50/x
3. Step 3: Cross multiply
   3,145.95x = 4,717.32 × 1,171.50
4. Step 4: Simplify right side
   3,145.95x = 5,526,340.38
5. Step 5: Solve for x
   x = 5,526,340.38/3,145.95
6. Step 6: Final answer
   x = 1,756.65