Finding the Fourth Proportional to 2,275.81, 3,132.46 and 1,611.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.81 : 3,132.46 = 1,611.51 : x
2. Step 2: Convert to fraction form
   2,275.81/3,132.46 = 1,611.51/x
3. Step 3: Cross multiply
   2,275.81x = 3,132.46 × 1,611.51
4. Step 4: Simplify right side
   2,275.81x = 5,047,983.02
5. Step 5: Solve for x
   x = 5,047,983.02/2,275.81
6. Step 6: Final answer
   x = 2,218.10