Finding the Fourth Proportional to 2,148.93, 3,224.34 and 1,145.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.93 : 3,224.34 = 1,145.88 : x
2. Step 2: Convert to fraction form
   2,148.93/3,224.34 = 1,145.88/x
3. Step 3: Cross multiply
   2,148.93x = 3,224.34 × 1,145.88
4. Step 4: Simplify right side
   2,148.93x = 3,694,706.72
5. Step 5: Solve for x
   x = 3,694,706.72/2,148.93
6. Step 6: Final answer
   x = 1,719.32