Finding the Fourth Proportional to 2,315.32, 3,473.45 and 1,145.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.32 : 3,473.45 = 1,145.45 : x
2. Step 2: Convert to fraction form
   2,315.32/3,473.45 = 1,145.45/x
3. Step 3: Cross multiply
   2,315.32x = 3,473.45 × 1,145.45
4. Step 4: Simplify right side
   2,315.32x = 3,978,663.30
5. Step 5: Solve for x
   x = 3,978,663.30/2,315.32
6. Step 6: Final answer
   x = 1,718.41