Finding the Fourth Proportional to 2,275.27, 3,139.50 and 1,530.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.27 : 3,139.50 = 1,530.48 : x
2. Step 2: Convert to fraction form
   2,275.27/3,139.50 = 1,530.48/x
3. Step 3: Cross multiply
   2,275.27x = 3,139.50 × 1,530.48
4. Step 4: Simplify right side
   2,275.27x = 4,804,941.96
5. Step 5: Solve for x
   x = 4,804,941.96/2,275.27
6. Step 6: Final answer
   x = 2,111.81